check the vid

curious as to what might be the problem. i know for a fact its my pinion. i just got all the Delrin (White) Gears such as pinion the gear and all GPM (including Rear Differential) so i dont know if having gpm matters. i dont know what else to do. i have GPM everything just curious why its not catching. HELP!

YouTube Video

what motor is in it there is a slight difference in size between xmod and miniz motors from what i find at least

its the stock motor.