Check your regulator to make sure you are not zeroed out. I have been messing with mine and forgot I had the air closed
Then make sure you did not overlube the bolt. Make sure the orings just look wet. G3 do not like slathered on lube. Then there is a noid maintenance guide in the stickies. It's easy to do. Your piston may just need some love. Also, check your battery. Dead batteries cause alot of issues. Use a good name brand one.