Quote:
Originally Posted by Double Tapper
Is the gear timing setup correct,is the piston in the groove guides?.
This happened to me a few times.Then found out the hop up was
jaming the BB's and cuasing back presure to cause the piston to
fall off the timing and jam to the rear.
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The gears and tappet plate are properly set before I close the mechbox. the piston is in the grooves too (the mechbox wouldn't close otherwise?).