I was runnging my truck on a concrete driveway when the truck just stopped moving. The truck acts and snds like it is wanting to move but the wheels will barely turn. I tore some of the back apart and messed with the slipper clutch to see if thats what it is but when I tested it, it didnt help. It seems that when the wheels are off the truck the drivetrain will work and spin but once the wheels are on and placed on the ground it will hardly move at all, almost making a grinding noise. I did notice too that when you reverse the slipper clutch it will completely disengauge from the motor. Im still learning about this truck as it is my first real RC vehicle. I basically have the whole back end torn apart trying to fix it but am not having any luck. Wanted to see if anyone here could steer me in a good direction before I broke down and called the support line.