I was riding the supermoto setup to work this morning and started losing power at high rpms. It wouldn't pull itself, so I downshifted and it did the same thing, was only able to reach about half throttle before it would bog and start decelerating. When I reached the first hill, it began slowing dramatically and popped, causing oil to flood the air box and coolant on the front of the motor. It died as soon as I pulled over with smoke bellowing everywhere. Motor still turns over fine, but I can turn it with the kicker easily by hand. I'm guessing blown head gasket. Anyone know of a good source for rings/jug/gaskets?