Scott, Thank you, and I am alway glad to share what I know and happy to help out in any way I can. All 3 pictures are of the same rifle the one with the white background is from the GB Auction site ( I like saving one so I can compare after I work on one). I was lucky enough that my 1947 101 had the small cocking knob that goes with this gun and this one had the 5-ring knob the 1947 one needed so it was a win win in that area for me. I plan on taking pictures of the sisters together soon as they are only seperated by about 800 numbers on the stamping found on the action under the bolt. The tool I use I purchased from Baker Air guns, some people know how to make thier own tool, I am not set up for that and follow the advice of my father - always have the right tool for the job so I bought mine, here is a link to just the tool: https://www.bakerairguns.com/product/t1-t5-tool-for-crosman/ They also sell it as an option for thier seal kit as well, I think the combo price is around $55 for kit and tool. However, when it comess to seal kit or other needed parts for the 101, usually I turn to Rick at Precision Pellets, he is very knowledgeable in this rifle and may also sell the tool that is needed.
Gary, Thank you, I dug into this one right away because of your 102 project and I needed to see what was going on with this one. I tried to fix this one using the mix match parts but could not get it to hold air, I then decided to dig up some older parts I still had and decicded against using the lighter wire football shaped spring and went with the heavier brass football shaped valve spring. The test firing I did last night included checking for residual air, of which there was none, each shot all the air was dumped at each pump cycle of 3 to a max of 6 pumps, also before leaving for work today I checked and it held all its air over night, so no leaks detected at this time. Looking forward to your progress on the 102.