i brought my rsx to a good parking lot, but sadly it didnt run good. It was very slow. Im not sure y. Last night i installed stage2 red motor, which should make it faster, and yet it seems 2 run slower than a stage 1 motor. Something seems 2 b wrong mayb with the wheels and mayb a plastic bearing broke or something. It dosnt seem 2 have much pull/torque. But if i hold it in the air the wheels seem 2 spin ok. ??any1 have any suggestions of what i should do?