Drain the oil and run it to compensate the time it was over filled. This will reverses the damage of over filling.
If your not comfortable with that, $700 to take it off your hands.
2003 V - ASV C5 Levers, Univ. Solex bars, grip heaters, ktm mirrors, c.stand, SW Mo Engine grds,Two Bros, PC3, Garmin, Givi 460, tank bag, F. Extenda, BackOff, Super Brace, Elka Shock, Race Tech Gold. AWD/Mr.Ed's Moto seat mod. Dumonde Tech Racing Oil, Spider grips, Contour.
2001 KTM LC4 farkled (sold)