I have just recently installed the upgraded Starter clutch Kit and needle bearing. When trying to start after complete it spins as it did before, but with a slightly different sound. I believe it is the new remodeled damper assy spinning. I removed the left side crankshaft cover and the flywheel. Validated that the starter clutch just turns one way (the proper direction). I have read through different forums and some mention that the damper assy starts slipping at times shortly after replacement. They mention using the original damper assy. Is this suggested? If so, how do the new damper assy bushings come out? Another thing I saw in my readings, was that using auto oil can make the assembly slip. I did use Castor Oil 20w-50, could this be part of my problem. Any suggestions on how I can get back to a dependable starting bike.