Andrew why not step up and drill one out? I'm actually having problems from the cobra intake and carb trying to move them to the magnum I just got. Seems to be an air leak at the intake/cylinder. I'll have to order a new gasket with the tires I need for it I guess. Stock was 12mm intake+carb with 60 jet(2hp), now its 14 intake and carb with 68 jet.