All good information. Examining the wretched screw slot again, I'm thinking a very angry person, with a short fuse, attacked the screw with poor equipment and a heavy hand. But considering this gun is at least 125 years old, who knows what the real story is. Anyway, I'm here to bring peace back into its life and work slowly towards a solution. If I send a picture to someone more tech savvy than me, could they upload the picture so you all can see what I'm up against?