I own a 2001 ZZ4/350. While working on installing a hitch on the bike I noticed that my rear brake caliper was was shifted to one side, and that the rotor was starting to dig into the caliper. When I removed the (Wilwood) caliper and shoes I saw that they had shifted and worn the shoes unevenly, evetually eating into the caliper. While talking to one of the shops they said that they had two '01 Hoss's with the same problem. Has any one else experienced this problem, and is there a good fix?