[Iain]

...to lesson its chances of failure in high-stress situations? We finally have our electrics hooked up, but when we tested our drives (wheels off the ground, mind you) we get nasty snapping noises whenever we shift from forward to reverse rapidly.

We already have the white ring (you can divine my level of technical expertise from that statement; I don't even know what it actually is) locked in the forward position, which I gather is a good idea. However, I've gotten the impression that something inside the transmission needs to be changed as well, or we run the risk of catastrophic failure once we actually put real strain on the motor.