GTA
Airguns by Make and Model => Crosman Airguns => Topic started by: unionrdr on September 23, 2017, 07:15:57 PM
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I have Jeff to thank for sending me this 760-D that was found in a trashcan, passed through a couple friends until Jeff decided I could give it a good home again...at long last. He'd seen my WTB add for a rifled barrel to fit my V1 760 Powermaster. The poor thing was neglected, outcast, unloved and forlorn. That was just so pitiful...I just didn't have the heart to say no! Even though I don't know if I can take the barrel ( I think it is rifled), and clean/reblue it for my own. Especially since the rear sight is crimped/tack welded on, and the front one is pressed over the end of the barrel. I could drill & tap them for mine...I don't know. It's grooved for a scope too. So a Centerpoint 4x32 would be nice on it. Anyway, here's a video I just did showing the opening of the package! Serial number 498100593.
https://www.youtube.com/watch?v=0_ffbolx_xc (https://www.youtube.com/watch?v=0_ffbolx_xc)
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Hey there Leonard :D Cool video, thanks for sharing! Just a friendly suggestion, CentrePoint also makes a 3x32 scope, which is a bit shorter/compact than the 4x32. I've put one on my late gen 760, it fits real good, and the glass is more than decent.
Cheers!
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I already have the Centerpoint 4x32 from my son's Optimus. Gave him the 3-9x32 that came with my Winchester 1400cs and a spare Hammers 4-bolt mount. So I was thinking of putting the 4x32 on my V1 760 Powermaster. Then get Centerpoint's 6x32 for the 160 Pellgun the 4x32 is on now. I installed my old 70's Weaver V22-A DualX 3-6x18 .22 pencil scope on the 760-D Pumpmaster. Then this morning, I scrubbed it a couple times with Birchwood/Casey cleaner/degreaser. Wiped it off then rubbed with some Rem-Oil, wiped again. Looks a bit better now. Then put about 18 shots through it at a Gamo Target at only about 3 yards t play around with the scope adjusters. Can't shoot outside here at all. Rifle insists on grouping with the Beeman silver bear 7.10gr pellets. So it'll get stripped, reblued and mac1 seal/piston upgrade kit. Just like my variant one will. Although it'll get a custom scope mount I dreamed up. The barrel on the 760-D is also about 1.5 inches shorter than the original. Here's some pics...
(http://imagizer.imageshack.us/v2/320x240q90/922/3JAkGd.jpg) (https://imageshack.com/i/pm3JAkGdj)
(http://imagizer.imageshack.us/v2/320x240q90/924/OGNO3p.jpg) (https://imageshack.com/i/poOGNO3pj)
(http://imagizer.imageshack.us/v2/320x240q90/922/saRlxo.jpg) (https://imageshack.com/i/pmsaRlxoj)
And trying the Centerpoint 4x32 on the 760 V1 for size;
(http://imagizer.imageshack.us/v2/320x240q90/923/aRG9cd.jpg) (https://imageshack.com/i/pnaRG9cdj)
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Great score, glad you took it.
The barrel won't fit in your old self cocker, but now you can just leave your childhood gun stock and use this new one for all of the modifying you want to do.
Check the date in the serial number, I think this would be a mid 90's gun?
Don't quote me on that though.
It's got the plastic receiver , ( looks like a plastic receiver gun ) it's got the 90's+ press fit front sight, and it's got the later abs stock which didn't have the with spacer.
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Thank you. I may well just leave my V1 as is, save for rebluing some parts and the seal/piston upgrade kits for both, and the scope mount. But, well, the serial # is 498100593. So I don't know if that means 4-98 or 5-93? I also notice where the butt stock mounts to the receiver, the 760-D is squared off. Unlike the 760 v1, which has that rounded protrusion. And yes, this one has the plastic receiver and you pull the bolt back to cock it. I also noticed right away it has a bolt exactly like the one on the Remington Nylon 66, or the Kmart version I have called the Mohawk 10c. And the rear sight is crimped in place and tack welded, the front sight is push on, and loose now. I'll use a bit of hot glue around the end of the barrel when I push it back on after repairs. I wish the 760-D's barrel wasn't some 1 1/2" shorter. Too bad for accuracy's sake. I like the screw on sights more, personally. But I am quite surprised it still shoots as well as it does, being pulled out of a trashcan. Then going through three owners till we came together. She'll have a good home from here on out! Maybe even hunt feral pigeons?
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Thank you. I may well just leave my V1 as is, save for rebluing some parts and the seal/piston upgrade kits for both, and the scope mount. But, well, the serial # is 498100593. So I don't know if that means 4-98 or 5-93? I also notice where the butt stock mounts to the receiver, the 760-D is squared off. Unlike the 760 v1, which has that rounded protrusion. And yes, this one has the plastic receiver and you pull the bolt back to cock it. I also noticed right away it has a bolt exactly like the one on the Remington Nylon 66, or the Kmart version I have called the Mohawk 10c. And the rear sight is crimped in place and tack welded, the front sight is push on, and loose now. I'll use a bit of hot glue around the end of the barrel when I push it back on after repairs. I wish the 760-D's barrel wasn't some 1 1/2" shorter. Too bad for accuracy's sake. I like the screw on sights more, personally. But I am quite surprised it still shoots as well as it does, being pulled out of a trashcan. Then going through three owners till we came together. She'll have a good home from here on out! Maybe even hunt feral pigeons?
yep, 1998 it's the first 3 digits that date guns 1975 or later.
This is only speculation, but it would stand to reason that the manual cocking plastic bolt which came out in the late 70's was modeled after the nylon 66.
The 2100 which came out around '74 was absolutely modeled after it, and since the bolt handle is the same shape on these ( different part but looks the same ) that would mean they were also modeled after the Remington nylon 66 bolt handle.
Btw some of the first variant 760's also had rounded stock lugs as well, it was only the very early ones that were square.
Something to note is that on the more modern guns like this one, the screws are more of a slotted screw with a diamond on the center instead of a true Phillips so use a Flathead screwdriver when you go to take it apart.
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Quoted from the Crosman site: ''If your Crosman airgun was manufactured after July of 1975, the first three or four digits of the serial number indicate the month and year the gun was built. For example if the first three or four digits of the serial number were 1179 or N79 then your gun was manufactured in November of 1979.''
http://www.crosman.com/discover/crosman/crosman-product-dates (http://www.crosman.com/discover/crosman/crosman-product-dates)
HTH, and keep up your good work :D
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Thanks guys! So April 1998 it is (498100593). The bolt sure looks and pulls just like the Nylon66/Mohawk10c. Sounds just like it too, being blued steel on plastic. Gotta clean the scope grooves with that double-ended toothbrush thing & make sure the scope's sittin' down proper. Scope seems like it can't adjust high enough? Have to find a place to measure 10 yards too.
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I've also come up with a rig to dip the barrels in cold blue solution. Or rather use coat hanger wire and dowel rods to suspend them in it. But I need some kind of long, narrow troughs not much wider than any 760's .177cal barrels to hang them in the blue/rust remover. Then the bluing solution. No more than 1 inch high, and no more than about a half inch longer at both ends than the longest .177cal barrel used Just like I do the small part and screws. So I need something in those dimensions to use. Or have 3-D printed if anyone has a 3-D printer that big? Or a vacuum former of that size, to vacuum form them out of plastic?
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PVC pipe with a cap epoxied on the end works fine. Just clamp it in a bench vise to keep it upright.
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Dang, now that's an A-Duke idea! Then just cut a slot in it to dunk/hold the barrel in with the dowels/coat hanger wire holders. I'm planning a wood holder something like a wood gun butler to hold the slotted dunk tanks in. Gotta be portable in my situation. Great idea!
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Or could line the wood trough with heavy plastic, or seal it with flex seal?.. not sure how flex seal woild hold up to chemicals.
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Gotta come up with something that doesn't use a lot of each chemical but big enough for different length barrels. So I'll need a couple of them to start with I guess?
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A piece of 3/4" pvc, 28" long is all you'll ever need.
Put the barrel in first, then add the chemical until it covers the barrel. Done deal.
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That's about what I'm thinking? On it's side, in a sort of wood Gun Butler kind of rig where the forks on top will hold a dowel rod with coat hanger wires that are attached to smaller dowels that fit bot ends of the barrel. Seen a fella doing hot bluing that way in a video. Want to minimize chemical use. The front and rear sight parts are polished, gotta redo the barrel next. Gotta wait til tomorrow to get to Walmart and Cabela's for supplies. This 760/761xl barrel is about 20 3/4" long. So I'll make the first, " tank" 21 inches even. Gotta draw this up, as the 760-D's barrel and pump tube are really rusty. As are the pivot pin and such. I'll start on the 760-D when the 760 v1 is done.
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It's easier if the tube is straight up and down. You use the whole tube, not cut in half lengthwise. Easier to handle, avoids spills.
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That's true. I was just thinking of it the way it popped into my head to start with? But a stand-up floor dipping rig would be simpler? Kind of like the wooden holder for the, " yard of beer" glass Spence used to sell? That way, different diameter/length of dipping tubes could be swapped in and out to save on chemicals. But a wooden dowel barrel plug with wire for suspending it might not fit tight enough to pull it out again?
Anyway, I also got some close-up shots of the 760-D Pumpmaster (4/98) receiver, showing the newer design BB loading port. The other showing the Remington Nylon 66/Mohawk 10c style sliding bolt, that also cocks this newer revision of the 760.
(http://imagizer.imageshack.us/v2/320x240q90/923/0afjDU.jpg) (https://imageshack.com/i/pn0afjDUj)
(http://imagizer.imageshack.us/v2/320x240q90/924/2F6ozC.jpg) (https://imageshack.com/i/po2F6ozCj)
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I use the cheap arse plastic screw anchors. ( the ones that look like fancy colored dunce caps ). Pops right in the barrel, and it's hollow all the way through.
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I'll have to look at those when I get out for chemicals, steel strap and such.
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I spent about an hour PM'ing my older Brother on Facebook just now. I never knew when his house got robbed, that his safe got robbed. Including, he just told me, a " pump up air pistol". He said he couldn't remember the make and model. I felt sorry for my brother, a Marine from 'nam era too. He said he really liked and missed shooting that pellet pistol. He loved playin' around with them. Said he had a lot of rabbits in his back yard too. Out in the country a good piece from me. So, I just knew what I have to do for Christmas for him! I'll restore the 760-D Pumpmaster, install another Simmons 4x32 on it and sight it in for 10-15 yards for him. Idk if I can get it done for Christmas? Sure would like too! So how about helping me? I need a seal/piston rebuild kit for it. Updated parts as much as possible too. ASAP!I want to make my brother happy again! Here's a pic with the Simmons 4x32 mounted on it with Simmons mounts the scope comes with;
(http://imagizer.imageshack.com/v2/640x480q90/924/Bt3cen.jpg) (https://imageshack.com/i/poBt3cenj)
And these two bottles of B/C Perma-Blue came in last evening, so I gotta make a quick job of stripping and rebluing the barrel and pump tube;
(http://imagizer.imageshack.com/v2/320x240q90/922/kjEEz1.jpg) (https://imageshack.com/i/pmkjEEz1j)
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Okay, well, since my brother PM'd me on Facebook about how the gun was coming, I pushed it to the head of the restoration line. Had to go to Harbor Freight Tools and get a set of long pin punches. It seems the pivot pin on the front of the pump tube/forestock is a tubular pin inside of a tube? That seems to be why you need a pin punch to remove it? I also noticed, upon scanning the parts diagram, that the elevation adjuster for the rear sight is missing? Interesting too that the little pump piston connecting rod assembly is blued as well?! So here then, is part one of my 760-D Pumpmaster resto on Airgun Shooter!
https://www.youtube.com/watch?v=FdO2TY2fBq8 (https://www.youtube.com/watch?v=FdO2TY2fBq8)
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Well, being a really slow day today (I guess everyone had to go back to work & school?), even the 5-6 Facebook groups I'm admin or moderator of came to a hault for a couple hours. So, getting bored, I decided to work on the rifle a bit more. Got a few small parts soaking in B/C blue/rust remover. Let the green fairy do her thing in an old Tooters glass I saved from earlier times. Looks like it'll take at least a couple hours, though? Rust is embedded pretty serious.
(https://imagizer.imageshack.com/v2/640x480q90/923/s6V45a.jpg) (https://imageshack.com/i/pns6V45aj)
(https://imagizer.imageshack.com/v2/640x480q90/924/8VJ5K0.jpg) (https://imageshack.com/i/po8VJ5K0j)
I thought I'd at least get something done while I wait for the brass brushes,blue paper towels and long pin punches to get here.
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Here's part 2 of my 760-D Pumpmaster resto for your consideration.
https://www.youtube.com/watch?v=ny_EzYLBANg (https://www.youtube.com/watch?v=ny_EzYLBANg)
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I started working on the next episode of this restoration today. Should be up by the end of the week?
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Okay. Got part 3 done earlier than expected, so here it is...
https://www.youtube.com/watch?v=AWR5wVU0H1Q (https://www.youtube.com/watch?v=AWR5wVU0H1Q)
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These must've been delivered very late yesterday, since my son found'em on the porch when he came home from work early this morning? Set of roll pin punches for knocking out the roll pins used as pump pivot points on my 760's;
(https://imagizer.imageshack.com/v2/640x480q90/922/FM5ZfL.jpg) (https://imageshack.com/i/pmFM5ZfLj)
(https://imagizer.imageshack.com/v2/640x480q90/923/p7ycCW.jpg) (https://imageshack.com/i/pnp7ycCWj)
(https://imagizer.imageshack.com/v2/640x480q90/922/HMcUPK.jpg) (https://imageshack.com/i/pmHMcUPKj)
Found'em at homer cheapo for $13.09. Now I can start finishing it up finally.
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Got some work done on the 760-D, trying to wind it up. Here's part 4 of the restoration videos;
https://www.youtube.com/watch?v=N9QnLb1j41o&feature=youtu.be (https://www.youtube.com/watch?v=N9QnLb1j41o&feature=youtu.be)
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The pump tube bluing job is curing very nicely indeed! All that polishing paid off!...
(https://imagizer.imageshack.com/v2/640x480q90/922/lwDtUa.jpg) (https://imageshack.com/i/pmlwDtUaj)
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Very nice job Leonard, you really brought it back to life! There was quite a bit of pitting, but it doesn't show at all. If I can offer an advice, keep it well oiled, cold bluing is not as rust resistant as hot bluing, that would be sad to see surface rust after all that work! And cool vid BTW!
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Got some work done on the 760-D, trying to wind it up. Here's part 4 of the restoration videos;
https://www.youtube.com/watch?v=N9QnLb1j41o&feature=youtu.be (https://www.youtube.com/watch?v=N9QnLb1j41o&feature=youtu.be)
Great job on the bluing, way better than this plastic gun deserves.
Now I don't want to sound rude or anything, but this was my favorite video so far, watching you try to remove those " screws " was so hilarious.
Just so you know those aren't screws, they're moulded into the sonic welded on butt plate.
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Thanks Happymechanic! And yes, I keep them oiled and cleaned. I think we're a lil more like ZZTop...Manic Mechanic! Have mercy, miss Percy...I done put da coon tune on this B****! THAT's RIGHT! ;)
It was kinda funny later as I was editing and saw that moment of realization. Seems to me we had this conversation elsewhere today??? And wait till mac1 gets the manual cocking seal upgrade kits completed! I'm getting one when he does for this one. So I'm moving on to repairs and a couple other rifles I need to get to work on again I did videos for.
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Okay, well, mac1 said he was refunding everyone's money who pre-paid for the 760-D manual cocking rebuild kits. He's still having trouble wit the 90 durometer seal supplier. So I searched Amazon again, finding a seal/rebuild kit for $13.99. Got here yesterday. They also gave me a printout of the 760-B, etc exploded diagram .PDF I already found. Doesn't say "D" on it, but virtually the same.
(https://imagizer.imageshack.com/v2/640x480q90/924/u1taB6.jpg) (https://imageshack.com/i/pou1taB6j)
So the rebuild video will be coming soon. Trying to finish the rebuild/video for the 760v1 at the moment.
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I started working on the 760-D Pumpmaster restoration final episode today. Want to get it done for next weekend. This is gonna be good!...
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And here is the 760-D restoration, part 5. Even on a bright day outside, it's hard to get dark objects to show up lighter, as they actually are. Or bright ones on dark surfaces. Digital has it's limitations. Anyway, here's the video;
https://www.youtube.com/watch?v=Bp1QChJxnnU (https://www.youtube.com/watch?v=Bp1QChJxnnU)
And some better pics of the stocks under the desk lamp. Real dark with thunder boomers outside! I didn't think until early this morning that I should've sanded them with 800 grit after the gloss black acrylic had dried to lighten the tone of the high spots. Then apply the Tru-Oil top coat. The stocks would've been a hair lighter over-all. Note to self...
(https://imagizer.imageshack.com/v2/640x480q90/922/Q86uSO.jpg) (https://imageshack.com/i/pmQ86uSOj)
(https://imagizer.imageshack.com/v2/640x480q90/923/CB57nn.jpg) (https://imageshack.com/i/pnCB57nnj)
(https://imagizer.imageshack.com/v2/640x480q90/923/sZb1oy.jpg) (https://imageshack.com/i/pnsZb1oyj)
(https://imagizer.imageshack.com/v2/640x480q90/924/yptUsG.jpg) (https://imageshack.com/i/poyptUsGj)
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Well, all is not well. Hit an unexpected snag. The white plastic check valve in the rebuild kit is too short, so I put the longer stock one back in and reassembled the rifle the 2nd or 3rd time. Still pumping all the air out the barrel. Thinking the new white plastic exhaust valve stem not closing or? Thinking of putting the old one back in? Polished it up and all. Got the trigger assembly right and lubed. Not sure what to tweak this time?(https://imagizer.imageshack.com/v2/640x480q90/922/EJqK9s.jpg) (https://imageshack.com/i/pmEJqK9sj)
(https://imagizer.imageshack.com/v2/640x480q90/924/D6ozie.jpg) (https://imageshack.com/i/poD6oziej)
(https://imagizer.imageshack.com/v2/640x480q90/924/TiLVvi.jpg) (https://imageshack.com/i/poTiLVvij)
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Okay, I figured out and fixed all the bugs. Including those the Crosman diagrams don't show or explain. I've taken care of all that, especially with regard to the, " rebuild kits". Here then, is the final episode of the 760-D Pumpmaster restoration.
https://www.youtube.com/watch?v=sDssCP0pvwU&feature=youtu.be (https://www.youtube.com/watch?v=sDssCP0pvwU&feature=youtu.be)
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And some pics from today with me and the 760-D after cleaning & lubing it;
(https://imagizer.imageshack.com/v2/640x480q90/923/PrK65U.jpg) (https://imageshack.com/i/pnPrK65Uj)
(https://imagizer.imageshack.com/v2/640x480q90/923/kseros.jpg) (https://imageshack.com/i/pnkserosj)
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well, dang. My chrono quit on me when I went to test this 760-D. Loss of com between the 'droid phone and the Caldwell unit. So I called Battenfield Technologies, Inc today. They make Caldwell products. I explained my problem, he suggested what to try, no go again. So, they're sending me (free!) the USB wire that plugs between the phone and the fire wire port to the left of the headphone jack port the wire provided uses. and... the white LED lights they changed to after mine with the IR lights was built (9/29/16). Their phone # is; (573) 445-9200. Also, they posted on Amazon's page for the unit that those built 2015-2016 that caused a lot of ERROR2 & ERROR3's had to be sent back and replaced. They want to try the test wire they use and the white LED's and see if that works. All free! So I told him I'd test them singly and together to see what happens. Nice of them to at least try to help nearly 2 years after the fact!?
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The final chapter in this all-gone-haywire adventure is ready for you on Airgun Fan!
https://www.youtube.com/watch?v=En_3PpIcpCI&feature=youtu.be (https://www.youtube.com/watch?v=En_3PpIcpCI&feature=youtu.be)
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Well, two days ago I was looking at the 760-D yet again, and just couldn't stand how the stock, " overwash" was looking too dark and rather blotchy for my liking. (refer to earlier posts here to see the before pics) So, I got out a piece of 800-grit emery paper and carefully sanded down the butt stock. Just enough to sand off the high spots that the black overwash had darkened too much to merely wipe off with a damp cloth. This exposed the medium-brown plastic once more, making the black filled grain stand out more clearly. And lightening the tone overall. I then re-clear coated it with Tru-Oil and hung it up to dry thoroughly. Now it looks more like what I was trying to replace with my " overwash" method. This is the darkened grain detail Crosman started leaving out of the production process at some point. Darn shame, as you can see at last. Lots of molded-in grain detail there!
(https://imagizer.imageshack.com/v2/640x480q90/922/igDqTY.jpg) (https://imageshack.com/i/pmigDqTYj)
(https://imagizer.imageshack.com/v2/640x480q90/924/UY0KFG.jpg) (https://imageshack.com/i/poUY0KFGj)
(https://imagizer.imageshack.com/v2/640x480q90/921/dT573e.jpg) (https://imageshack.com/i/pldT573ej)
(https://imagizer.imageshack.com/v2/640x480q90/924/J76Gsj.jpg) (https://imageshack.com/i/poJ76Gsjj)