Installed the Kit yesterday minus the trigger and the trigger break is crisp with only a little over 1/8 inch take up. Viewing the YouTube video was helpful but there was plenty of things to frustrate you. The bolt stop didn't just drop off and I spent 15 mins, prying it off with out trying to bending it, and it was almost as hard getting it back on. The sear install was easy, then came the Hammer. Three hands weren't enough putting that in and hooking up the safety at the same time. A tip here is to get the safety handle shaft through the Hammer to the right side and through, back it back a bit until the detent and spring can be added and then push it into the safety keyhole otherwise you'll go nuts trying to do both at the same time. But not a bad job for guy over 77, if I could you can.