I just purchased a mint 132 that appears to have been shot only about a 100 times or so, it came with the box and all the paperwork. It also appears to have been sitting for over 10 years. I pumped a few strokes and it wouldnt shoot a pellet it just popped. I Oiled the felt washer and kept trying now it fires great I am sure its not 100%. Any tricks or checks I can do? What are some suggestions? Is this re=sealable with the kits on gun broker? All your help will be appreciated I want to get this back to life to enjoy it.