Remove the rollers and install ball bearings that are the exact size as the rollers that were removed. Then drill the stationary sheave to accept the .206" wire diameter factory yellow spring. Drill the helix to give the spring 90 degrees of twist. Walla an awesome clutch converted from a piece of junk clutch! This clutch now has excellent up shift and awesome back shift. The only problem is that in time, the helix will be a problem with the bearings. I have designed a hardened steel helix with adjustable torsion for the spring that is easy and infinite in it's adjustment. I have not yet completed that system yet, but I will. By the way, install three .030 shims from the three tower clutches of the past to give you the proper belt deflection. Then remove one of the two washer from behind the secondary clutch next to the bearing. Bolt the clutch to the jack shaft using a large washer that just fits the inside bore of the clutch with two or three smaller flat washers that are small enough to fit inside the spline area. This will then let you float the secondary. I float mine about .080". It works well.