I'm trying to fit a new Cylinder and Slide trigger in my Colt Mk IV Series 80 full sized Government Model. The pistol is stock and with the stock trigger it has a fairly short length of pull. The reviews suggest it is a "drop in trigger" with minimal fitting, however when I try to install it into my pistol it appears to be about 1/8" too long. I had to do some minor honing of the aluminum portion to get it to smoothly slide without dragging, but it is smooth now. however, when fully seated into the pistol the rear steel bow sticks out far enough to interfere with the disconnector/sear. It is as if the front curved portion of the steel bow is bottoming out. Is there more shaping required? it looks like the steel bow portion is just a bit too long to fit. I'm open to suggestions. Edmo Wanna kill these ads? We can help!