I've got some problems with my mini-madness. The first one is that the trucks wheels don't turn, but I can hear the servo making noises like its trying to turn the wheels. The next one is that when I try to go foreward the truck doesn't go anywhere it doesn't make any noise, and also when I try to go into reverse the motor turns the pinion and spur gears but doesn't turn the driveshafts and the truck dosn't move. Sorry if the explanations are hard to understand, I did my best. Any help would be appreciated.

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