I think what I may do is try to break the gears in to the point where the motor doesnt need much power to move them, which could solve the problem so that the motor wont struggle so much with the gears. If it still doesnt work, then Ill buy a replacement motor and solve the problem that way. For the gear boxes, can i still break them in through the stock electronics? Like remove the gear boxes, but mayby tape the controller throttle on full and just leave it on till the battery drains?