When I read that I just consider it a statement that no moron, with a fifty cent screw driver, has buggered up the gun. I agree a well fitting turn-screw, used with care by a competent person, can leave no mark. When I read that and see that the screws are out of timing I wonder.... Did they not do it right at the factory or has it been fiddled with but put back with care so that there is just a trail of crumbs to follow. Saw such a gun yesterday. Left screw on floor plate was at 11:50 and right was at 12:05. They might have been switched or just not put back to 12:00.
