That's it! Can I be a pest and ask if there are any sources for parts? I've noticed this rifle misfires on occasion, seems when the lever is fully closed, there is a small amount of rearward movement in the bolt, just enough to cause light hammer strikes. Can't tell if the lever recess in the bolt is worn or if the lever has wear. According to what info I've found this rifle was from the 70's, not 60's as the original owner thought.