[venture]

I have a G&P version 2 gearbox here that was jammed with the piston fully rearward when it was brought to me. I disassembled the box and everything looked fine. I lubed the grease points and reassembled it. It locked back again on first cycle (never completed a cycle)

Next I changed the motor and the piston/head combo. Still locks back on first cycle.

Any ideas as to what caused this? This was a gearbox that the owner was using up until recently. Now it cannot do a single cycle with an 11.1v lipo??