Check all connections for the servo prob, if you find nothing call Horizon Hobby. I had a prob with reception with mine and they sent me a whole new ESC/RX w/crystals. Probably a reman, but hey, it was free and worked great.
This place is a excellent store w/FAST shipping and great prices. Get the CC ready !!!!
http://www.thetoyz.com/cart/thetoyz_...cat_name=MICRO T . BAJA, DT&action=list