Sounds like an airway could be blocked. If you had/have old o-rings in the gun, they may have chipped. Teflon will also mess with a gun. Just take it all apart (assuming you know how to) and then put back together, all the while going through everything to make sure it's clean, lubed, and in operating condition.
If that doesn't work, then you may have to spell out your problem more elaborately. Good luck to ya.
The Original WarMachine Factory Team
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