To tighten he worked with a 4 oz. ball peen hammer that has been polished till it is literally perfect when looked at under magnifying glass. Then he LIGHTLY tapped the rear most thread forward towards the muzzle ever so much. After this he tapped along the shoulder that butts up against the reciever towards the rear. Again very little taps all the way around it. This in effect put any metal that had been mushed forward from overtightening back to where it is supposed to be and made the threads and shoulder tighten into each other again. This left no visable marks as it was polished so well and again very light taps, no discernable without a magnifying glass. Had to use the forearm to tighten that last 1/16th of an inch when this was complete. Before it would go past the locked position by a good 1/8th of an inch. Tight as a drum now and no shims, no headspace issues. I am happy to say the least. Ryan
