I've done one that turned out great. Its a piece of cake. All I did was polish all mating surfaces and take a file to the hammer where it hooks to the sear. You need to take some of the "claw" off the hammer. There's way too much overlap where the hammer and sear meet. Do this very slowly and reassemble and check often. After complete make sure it will not go off accidentally by cocking bolt and bumping the butt on the floor rather hard (on a phonebook or something). If it does trash it. If you take your time and check often, you won't have any trouble.