I’m mixing threads from the other forum but you said your pump arm was welded to probably put on the new pump cup? If you are now finding that it was not adjusted correctly he may have given up? It may be why your rifle is in such good shape, it wasn’t used after that? I’ve seen that with other vintage rifles, sometimes the ones in excellent shape broke and they were never fixed? Good thing is this is a easy fix, I bought one from Rick for a Crosman 101 that had a leather pump seal. Worked great and was not much money. I like you wanted to keep the original but in the end I used the new one cause I would be the only one that would know anyway.