Having some trouble getting my blue ofna box to work. Its been used before so the wheel is worn down to 74mm instead of what it is new (76mm). But I don't think that's the problem because the wheel is being stopped by the chassis and I would think a smaller wheel would fit up in the slot further and make contact with the flywheel easier? I definitely don't wont to grind out the slot/chassis to get it in there, but the flywheel seems really raised. What other starter boxes are guys having luck with?