I was out riding yesterday at a track for a little over a two hours. We were taking a lot of water breaks since the temp was over 100, so I was not running my bike the entire time. Anyway, here goes. 01 YZ 426, bike was running great on the track and the it started to bog a little. I thought I was running out of gas so I was going to head back to the truck when it stalled. I was on a hill so I just bump started it. It started and went about 30 feet before it stalled again. Looked in the tank to confirm, but there was still gas. Tried to kick start it and the more I tried the harder the compression got. Tried to bump start it and got nothing. At this point the kick start lever will not move at all. I checked the compression lever and it is working properly (or so it appears). I just wanted to post the problem and get some input before I start taking things apart. Any suggestions?