GRT-4G install vs GRT 3

[Singleshooter]

So my Titan arrivered from jeeperatt1 yesterday.  It was shipped with the GRT 3 uninstalled.  I also have a GRT-4G sitting on my desk that was purchased a month ago for my Gamo Whisper.  I have watched the video and read the instructions on the 4G and words like notice the orientation of spring x, and remove spring y, have kept me from tearing into it.  The video show nothing about this.

I looked over the instructions for the GRT 3 and nothing about it looked tough.  I think it literally took 5 minutes to complete.

Has anyone done both of these conversions?  How does the 4G install compare?

[AlwaysLearning]

I'm waiting on my 4G for a Big Cat. I'm a little concerned about how difficult it might be to install... but unlike you I have no reservations about ripping into it... I agree with you that the video leaves you nervous after watching. The video is good but it definitely isn't complete. Sorry that I don't know the answer to your question, and I'm waiting for a response to this as well.

[tpmaple]

The 4G I put in my Big Cat was kind of a pain, not because of the trigger but because of the bear trap lever.  It would not seat properly so when I put the trigger group back together and installed it the trigger would not spring back and it was impossible to feel the first stage bump.  I just had to deburr the lever, flat sand it a little and open up the pin hole in it so the lever would be able to sit flat in the trigger body.  Its all good now.  The written instructions with the photos I thought were the best installation resource.