I recently purchased the matrix. I used the heat cycle method for break-in. When I ran on track the temps were extremely high. I enlarged the openings on body and replaced stock air filter. Does this motor just run at a high temp or is there something wrong? Also, my body was very difficult to put on. I had to make a lot of adjustments to get it to fit. I kinda screwed the body up in the process. Is this the old body or this is just how they fit? Other than these issues the buggy is great. Love the radio system.