Problem... I rode the bike one day and everything was fine. Next day when I started it, it was puking oil out everywhere. I found out that the seal around the shaft the front sprocket is on has popped out. I tapped it back in place.. seemed like a nice tight seal, started it up and watched it get slowly pushed right back out again and oil dump all over. Why is the crankcase building up this much pressure? Plugged hose/vent somewhere? I don't know where the vent is on this thing.