Looking for some ideas on what might be wrong... Started my bike up fine, let it warm up for a little bit then took it for a spin up the street to make sure it was all running good for my ride the next day. All seemed ok until I was coming back. Pulling up my driveway I pulled the clutch in and started coasting, when all of a sudden the bike stopped, and seemed to lock up. Now the kickstart can't be kicked at all, it won't even move, kind of like kicking a solid wall. I have done the following. 1. Took the clutch plates out and drive train moves fine back and forth. 2. Took the header off, I can see two valves still there on the exhaust side. 3. Took the valve cover off and everything looks ok, i.e. nothing broken. 4. Removed the spark plug and I can feel air coming out while turning the motor. So piston seems to be going up and down. It seems like I can only rotate the motor to a certain point and it stops. I can then rotate it backwards until a certain spot. When it does stop the cam lobes on the exhaust side are up, and the intake are down. Decompression lever is working. Not sure what is going on, intake valve, is there a gear in the kickstart drive train that could be gone?? Any ideas appreciated. Thanks.