Brushless motors are sorry. The velineon in the MERV can literally make it do standing backflips. Check it out on youtube. I suggest Jetlag2222' vids of it. The previous owner of the truck probably ran those motors to death. You could always just buy another $20 motor but you won't get as much fun out of it as a Velineon. One more thing, did you make sure it's not geared too high? And what batteries are you using?