I have a PN 64p diff with the light weight shaft and ceramic ball. I am running 53/12 with 5 ceramic balls. The problem is that the diff seems to bind at one point only. It seems like a high point on the plates but after rebuilding it (sanding the plate), the problem seems to go away but after a couple of runs the problem returns.
Could it be the diff balls are no longer round. They seem to roll around well on a table. I also checked the shaft to see if it has bend in it. What seems to be weird, even if change the diff the problem still exists. Could the problem be on the rims, or bearings on the mount or right rear wheel? Need help, tired of rebuilding the diff but I am getting faster at it.
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