Has anyone noticed how much clearance there is from the seam flange of the CAT to the drive chain? Mine doesn't appear to be rubbing while driving, but while going slow and hitting a bump it seems to be striking the CAT along the side. Sounds like there is a loose rock in the pannier. And YES, the chain is at the proper tension. The dealer said that it does appear to be quite close and ground a little of the flange down.