Had the same problem living on the beach in S. Ca. Dealer wouldn't do a thing about it, said it was the salt air and my problem.
Moved to Tucson, got a new bike and the oxidation started. Dealer wouldn't do anything about it, said it was the dry air and my problem.
Now live in FL so now I have both heat and wet. Dealer won't do anything about it, said that it is the wet and heat and my problem.
Looks like I really screwed up this time by not keeping in a N2 filled bubble.
