Any advice. I'm having a hard time with this truck, last time we ran it, it was fine, this time, about two minutes in, the pinion backed away from the motor. I locked it down with blue locktite last time and cranked on the set screw to the point of almost stripping it. Did the same just now and will let it sit 24 hours. Last time it sat for 2 days. Should I try a new pinion? This one is a traxxas, it was really cheap and I figured it would at least be better than the arrma one that broke teeth off. Eventually I'm getting a teckno pinion but figured I'd just this one first.