Rifle Build Help in Rifle - Technical Posted October 17, 2018 So I checked my block again, and was able to tell things were in allignment by rooming the adjustment screw and looking inside the block. This was with the block against the shoulder. I figured I would try spacing the block off the shoulder and give it a try anyway. I spaced the block about .025 off the shoulder and shot the gun today. The problem still exists and the gun is functioning exactly how it was when the block was against the shoulder. Any other thoughts?