went for a little ride today. i was getting it pretty good in 3rd gear when the bike stalled and locked right up. tried kicking it and it wouldnt budge a bit. i pushed it home. i pulled the oil dipstick and oil just started pouring out like there was pressure behind it. what the hell happened? the oil wasnt over filled. i had checked it before i went for a ride. why would the oil pour out of the dipstick hole?