ok here we go i have cen matrix - venom starter box - novarossi 21bf. The problem i am having is the cen flywheel will not reach the starter box wheel. I switched the flywheel with another off a hyper 7 which is much bigger but the problem is it hits the brakes it is to big. So i am back to the cen flywheel which is too short for the box. Does anyone know the solution to my problem.