Thought I would put this out as others may have had or are having the issue.

I had maybe 10K on the RK when I developed a squeak in the rear end. Adjusted belt tension but it never really went away. Got to the point around 35K that it was driving me nuts. At around 60K had to replace another rear tire. Incidentally every time I replaced rear tire I had the indy check the bearings and he said they looked good. At this 60K tire replace I paid him to replace the bearings.

Well low and behold, the squeak was gone. I now have 70K and still no squeak. Moral of the story? I don't know, but if you have a squeak, look at the bearings.