Gentlemen, I borrowed a Powder Actuated Tool from a friend and in attempt to dismantle it and clean it prior to returning it the "shell ejector" function does not work any more. Further, When replacing and tightening the bottom Hex Screw, it bottoms out against the underside of the bolt action and does not allow it to slide back and forth. I may have misplaced a"spacer" that prohibits this from screwing all the way in. Further, it appears to have no real function??? Is there such a thing of an exploded view as to how all of the parts should fit together? I am reasonably mechanically inclined and probably able to figure it out once I see it. My work bench is a little cluttered; however, if I know what I am looking for and/or can order a part, it would be of great help. Please advise.. Ed Cunnie 401.884.5298 ecunnie@aemc.com