mr-rccrazy

here are a few things to check, when it is running, and you apply brake, if it stops the engine from running fast that means that you just need to adjust the throttle trim on the radio. If it doesnt, I recommend loosening the idle screw until the truck stops moving when it is topped. After you adjust your idle screw, you will need to check that your radio throttle trim is set right too. Hope this helps.