I'm hesitant to ask a simple unimportant question but here goes. Since I don't use a scope on my 22/45 Mark III, I removed the scope mount. Put the screws back into the top of the barrel and the rear screw contacts the bolt. I've had this pistol approximately 4 years and don't remember if it came with the screws mounted or not. Without the rear screw in place, the spring and top of bolt are visible which is another entry for dirt, etc. I'm considering using blue loc-tite and only running it down only about 70%. Open for better ideas........like I say, trivial, but it bothers me. Mebbe a shorter screw is available?