I have been asked by one of the girls at work to see if I can repair a 1982 crosman american classic which belonged to her recently deceased father, when pumping it up air could be heard blowing through the barrel so automatically thought the seals had dried out so ordered a new set of seal and stripped it down to find the seal on the barrel was in fact a nylon washer covered in blue gunk must point out this gun has homemade rear sights and the screws dont look original so who knows whats been done in the past but I do like a challenge!

New seals fitted and it does the same so to the internet for the answers which I should have done in the first place!From my research it seems that the exhaust valve seal is the cause of the problem, does anyone know where I can get a new exhaust valve stem from?

Regards Ian.