I'm in need of a exhaust gasket for my F6B. Changing out the exhaust and found that the gasket was missing on the right side. I have called all the Honda shops around Nashville, TN and no one has one. Ordered one from Partszilla last week and now I'm told it is on back order until who knows. I would be glad to buy it or replace it with a new one as soon as possible. Part # is 18392-MCA-S40.