After a 5 mile buzz around the neighborhood tonite, I pulled off the right side cover to see how the two gears were doing. Thats when I noticed the bottom of the case by the small gear was full of black goo. About a teaspoon full mabye. I've read in other posts where this is an indication of a bad crankshaft seal. Took the mag side off and it was dry. It runs really good,the best it ever has in fact. Can I change it without splitting the case? It's got about 50 miles on it