Is it normal to melt the spur gear within 15 minutes of very 1st use of my erevo? It was the stock 65t with 2 3s lipos. I just put on the 54t spur gear for now. The teeth on the 65t were fine. It had melted where you screw the gear to the clutch. the spur gear pretty much looked like a donut. The motor was hot is that normal?