Man, I might of just screwed something up. I took off my countershaft sprocket, and started my bike without it on. 20-30 seconds later oil was shooting out of the countershaft area. What the hell happened? Does the countershaft sprocket serve as a seal when bolted on the bike to keep oil from coming out of there? Please help!!! I shut it off right when that happened. It only leaked out maybe 1 1/2 oz of oil.(small puddle). To add: I had one hell of a time removing the sprocket. It was rusted on, I had someone hold the rear brake and I got it off. The bike did not leak until started. I checked it just now and its leaking slowly. Tilt the bike and it leaks. Im thinking that the countershaft seal is shot. I will need to replace it, please tell me there is a way with out splitting those cases. Thanks in advance.