I finally got around to disassembling the Tmaxx i just bought and the center of the spur gear is completely melted. I've got a new spur gear but I'm trying to figure out what this part is. Since the plastic is melted onto it, I don't know if I can scrape it off or if I should just get another one. I thought it was the slipper pad but it doesn't look like the pictures I am seeing for the one for the 3.3 motor. Anyone?