Obviously it's not from the crown of the road, since your right side should be more worn if that were the case (left side for us.) What does your front tire look like?
oviously you didn't read where he lives....Arizona....
I have posted multiple times, prior to the site crash, this syndrome, and attest it is either road crown (in areas as mine where the crown is extreme), and possibly an issue with incorrect frame geometry on the first built (08) models that is being kept under the table by Kaw.
experiment:
with the bike on the centerstand,
stand behind your bike, and look closely at the relationship between the center of the tire, and the pointy end of the fender at the bottom.....
does it look like the tire centerline is offset to either side (right side)of the center of the rear fender?
mine does.