Thanks Moleman! So if I machine the slot on the rear filler and or do the trigger group housing for dimensional purposes of properly locating the trigger group. The trigger group assembly should fully engage the slot of the rear filler. Correct? I guess I'm worried about the location of the trigger group. If it is to close or to far away the I'm worried the hammer won't work properly. If to close or to far away the hammer will not swing properly and fail to hit the firing pin.
Thanks, Barrel Guy