It would appear that our unit also has the passenger side mudflap issue.
Was crawling around under it today (connecting the straps for the cover for winter
) and noticed that the passenger side mudflap had some melted marks on it (from where it must bend backwards into the exhaust pipe).
Grabbing it with my hand I could easily push it back into the exhaust pipe. So now I either have to fix this, or take it back to the stealer and have them take a look at it...