I own a few of these wonderful guns and they are fine shooters indeed. I would not change the leather seal to a synthetic one if it was me. The leather seal is probably in good shape anyway. Bob in WV
Ill be turning a new guide tonight and probably a tophat. Im gonna look for another spring for the trigger its pretty obvious someone put this spring in its super stiff and you can tell it was just cut of at the one end and not flat like a factory spring.