I would wash it off and see how it does. Got over 23K on my 2011 XRs and if I do not wash it for awhile I see a small collection of dirt along the surface where the primary bolts to the engine. Unless it is actually dripping or you know it is loosing oil with it sitting overnight I would not worry about it. Took my bike in for an actual oil leak. A sender was leaking, it was the o-ring on it. Took it in, got it back, it leaked worse. They were going to call ma vic and see about tearing down the complete engine to do the output shaft seal. I suggested in a nice way they check what they just had apart. Guess what they tore the new oring slightly swapping it out. Put on a new o-ring and fixed it. I almost did the repair myself, but I figured it was under warrranty. Bike does not leak now, that has been a couple of years ago now. My point being if you still have warranty, make sure it is worth taking in, and make sure they are pretty positive about the problem and the repair. So even if you do it yourself, you do not want to rip the primary off and reseal it, then have the same problem after 600 plus miles,ha, ha.
Buckeye, Arizona(USA) 2011 Victory Cross Roads, Black police bag guards, black engine guards, black handle bars, Triumph Tiger mirrors, Triumph hand grips, set speedo/tach back 5" , adjustable timing wheel, Lloyzz Fuel Programmer III & air filter. Modified exhaust, made stock into 2 into 1. MRA windshield, Rotated front fender forward,relocated ignition switch, Bad Ace Fuel Tank Risers, Fat front tire.