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Gearbox issues
Recently I upgraded the internals in my gearbox (gears, cylinder head, piston head, piston), when I put the whole gearbox back together (which is a G&G pneumatic blow-back) the piston would get stuck partway back, so I push the spring release and nothing happens. I pushed the piston all the way back with a thin screw driver from the air nozzle and it was stiff to push, and the spring release still did nothing. Finally I started to take apart the gearbox, starting with the metal piece that holds the top/back of the gearbox together and the piston moved slightly, I then pushed the spring release and the piston moved all the way forward slowly.
Could this be the piston is too wide for my gearbox or anything else?
Thanks!
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