NitroRush,
I assume you have the "stock" cast flywheel. This can be the problem. First try tightening up the clutch nut pilot shaft. If this doesn't work, you'll have to upgrade to the aluminum flywheel and collet. I think the "cast" flywhheel has a factory defect that they might offer to fix. Being you have a NitroRush, why not try the HP EYE forum. There are many "experts" there (lol).