While running track day at VIR, noticed oil leak. Could not find anything loose, so went home. Dealer put in an oil breather recall that he said was the problem. Got bike home, rode 45 miles, now oil leak. Appears to be coming from oil bypass valve. Bike had 4300 miles before problem showed up, but it was the first track day it had been on, so first time it was run hard. Anyone else ran into similar problem? Taking it back to dealer again.