Originally Posted by AKRoadrunner
Not sure if you've resolved this issue yet, but my bike did the same. Mine was not an overfill issue as I never topped my bike off. It turned out to be a damaged gasket and the dealer replaced it under warranty. Hope this helps.
I had the same issue with mine (and so have a few others). On mine it was the big gasket that seals the top of the tank where the fuel pump assembly is secured. The gasket was cheap so I just repaired it myself rather than going thru the warranty hassle. When fitting the new gasket it was very difficult to slide the pump in without folding the gasket over on itself so my guess is that the failure is related to assembly line error.
Heres a bad picture of the gasket