Quote:
Originally Posted by baker_Jeff
It needed a new cylinder head. Replaced that. Piston oring wasn't sealing, so I replaced that. Put everything back together, test fired, and the tappet plate broke. Well crap.
Took it apart and replaced the tappet. Double checked everything, good seal on the piston and all that. Put it all back together and test fired... shooting 150fps.
The thing is... if I turn the gun upside down... FPS will jump to 390. I'm using Green Devil BBs and a midcap.
I've never seen this before. Any suggestions?
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have you check the hop up?