Try and post a picture if you can. I took the sprocket cover and chain guard cover off and cleaned ALL the grease/gunk off, degreased the chain, etc. Cleaned everything up real well. Took a ride yesterday (40 miles) and today (140 miles). Was there after both rides, worse after the 140 miles today. Still have some oil leaking from out of the sprocket cover. I have a drip that shows up on the upper right of the filter cover, a drip under the filter cover, a drip under the screen bolt, and a noticeable sheen/slight drip from right under the sprocket cover. Not sure what's going on. I was hoping it was chain grease/wax/gunk...but apparently not. Tech at the dealer said wait until I change the oil at 620 miles and if it's still doing it, bring it in. Not sure what changing the oil will do, I'm expecting a trip to the dealer.
I'm at 521 miles BTW.