Yeah I had a temp gun which was reading from 135-143. What I have been doing is as soon as the motor locks up I take a pair of pliers and tunr the motor opposite the direction of normal rotation at the pinch point so I have a full rotation till I hit the pinch point again...... and the motor locks up and the bump boxs bogs out and is just eating up my wheel. Do I need to get her hotter than this or what? I have the mugen bump box with two 6 cell batteries (7.2v x 2). Its frustrating to say the least