I got an rc10gt from a coworker with a still in box Picco .12r sg. I've found that the threaded portion is 1/4-28. I've measured the shaft where the clutch bell would go and it's .195 and the bell is .313. Where would I get bearing to fit that? How else could I mount the clutch bell? Is there a shaft with a 1/4-28 that I could use if I cut the shaft? The factory #7603 clutch nut is too small to thread on.