I know - unoriginal forum introduction. Bought bike on the cheap from a frustrated dude. He thought gas was pouring out of carb overflow. Really was the crankcase vent. I rebuilt petcock (fuel leaked into intake through vacuum line) and had an awesome low mileage 2005. Flushed oil well and figured bearings, lifters and seals survived the gas bath. Last time I rode, bike stopped running and I killed battery trying to start it. Pushed it home - it sucked. Fuel cap vent clogged and starved carb. Bike sat. Would start, but unhappy. It sat. With a charged battery, I tried to renew efforts. No start and horrible back fires. Bought carb rebuild kit. No start and horrible back fires. Bike on jack, and I see fuel leaking out of the air breather box drain tube! The orientation of front end had fuel going back instead of into cylinder. Bought a cheap petcock (do Kawasaki petcocks routinely fail?). Gas in bowl. Battery fresh off charger. Spins fast. Back fires horribly. My compression tester didn't have the 12mm plug size, but my thumb jumped off the hole. I sprayed some starting juice in the airbox for some type of satisfaction and with throttle open flames came out of the side of the airbox. Good times. I'm thinking it jumped time, but how? I set everything TDC after removing valve cover. All marked lines are good and chain is tight. Valve clearances are on the tight side, but within range. Bike only has 4700 miles. I bought a new plug off eBay. Probably buying an adapter for compression tester today. Option #1 - button it back up and repeat failures. Option #2 - keep peeling it apart and do a leak test on the valve seats. So how are y'all doing?