Kyle, is this your first RC? Just wondering. First thing I'd check is the motor mount screws. Any RC screw that goes into metal needs thread lock applied. Loktite BLUE (Non-permanent bond). The screws could be coming loose and causing your spur to get chewed. Google "setting gear mesh with paper method" on you tube. This is the most reliable way to set your mesh until you get comfortable doing it by eye and feel. This should solve your problem, providing that the motor mount hasn't been bent, which would cause mis-alignment. Off the top of my head, I don't know if the Wheelie King has a slipper clutch, but if it does and it's properly adjusted, it's meant to prevent drive line stress. Check your manual.