[Rabbit]

Alright - so first off - both gear boxes fit in the g&p receiver just fine - pins line up etc.

The minute the grip is put on and motor inserted with end plate - firing the gun will cause it to lock up and not function. I kind of get half of a cycle, then dead. Pulling the trigger causes no motor wind at this point in semi or full, as if its an electrial error.

At this point once the grip is taken off along with the motor the gearbox seems to function again and have electrical function once again (tested by running the motor outside of the grip)

Both gear boxes were taken out of the g&p receiver and inserted into a king arms receiver to which they fuctioned just fine when fully assembled.

The original g&p gearbox functions fine when inserted into the g&p receiver and assembled.

Comparing each gear box on the outside (assuming this is where the problem lays) the only differences I saw were in the selector plate - minor ones at that, small cuts on the ass end of the selector plate and the copper piece at the front removed

I mimicked both of these details on the lonex selector plate to no avail when given a trial run.

Any ideas?