Mt65 won't recock
so I just bought the gun and when I first shot it it worked fine but I could hear an air leak inside. I changed out the o rings and cup seal, fixed the leak but now the gun won't recock itself. I have taken it to two different shops, neither were able to fix it. I think its the o ring on the hammer but the ones I got from the guy that sold me the gun didn't fix it. Is it a special o ring? All input would be appreciated.