RE: Ofna Chrome Top wont work with my MBX5R
i had that problem with my buggy and my ofna box. i had to buy a different motor mount for mine, works like a charm now. you might could get away with buying a bigger flywheel but im not sure cause i dont own a mugen.
also if the flywheel does touch, maybe its that the motor is to tight to turn over since its a new one. you might want to heat up the motor and give it a try