I have the same issue.
Thought I had a belt issue due to my HD8 not wanting to climb the hill in front of my house. Squealing and jumpy when I go forward or in reverse. Opened up the cover and belt didn't look worn but was very loose. I had already purchased a new belt just in case, and decided to just replace it as I already had the cover off. Went to turn the pulley in the secondary to tighten belt and absolutely nothing, belt was very loose. No matter what I did, it would not tighten. I pulled the secondary clutch for inspection and heard a rattling noise inside. I put the Clutch tool on and tightened it up and out fell a bunch of broken roller pieces. My research has found that the stock rollers are not as good as a few after market parts. I found a clutch Rhino Kit on Amazon for $60 and awaiting shipment as I write this.
