i bought the same truck about a month ago i had the same problem i still dont think it got broken in right the temps were as high as350 i took the motor out and sealed the carb and backplate. the backplate bolts were very loose when i tried the motor im now getting temps at about 280 with the body on. i also cut the rear window out and a hole in the front window. the truck has been putting out pretty good power now but i think i going to put a new motor in it . i was going to race this truck but i might just buy something else now