I recently purchased this ECX Temper for my son. Not even 30 days ago.....I turned it on to play with and it turns but will not accelerate. I can play with all the setting on the remote and the vehicle responds. Everything but the throttle and reverse. I called Horizon Hobby and they are sending me a new motor. If this does not fix the problem what could it be??? ESC? I'm hoping its something simple but any help would be greatly appreciated.