I was out riding this past weekend on my 00' YZ-426F, and while I was riding my bike stalled out. I was going down down some hills waiting for a buddy so I took a sip of water from my camel pack and suddenly my bike nearly stalled out. I thought I might have bumped the kill switch with my hand so I grabbed a handful of throttle and took off. I got up to the top of this hill climb and as I crested the top my bike stalled. I sat there kicking the sh*t out of it for a while. It sounded like it had low compression, I finally pulled the hot start (which I usually don't have to do) and after about 5 more kicks it fired up. I revved it up a bit and it stalled. The kick start froze. So I rolled down to the bottom of the hill climb where my buddy was waiting. I took of my helmet and checked the oil to see if it smelt/looked burnt, but it wasn't. I thought it might be dying because of a possible electrical short so I checked the kill switch, and main harness but didn't find anything. None the less the kick start was frozen. I was pretty far out and we decided to head back to the truck; after what felt like a mile of pushing I got to the top of the hill and bomb rode it down. What a feeling a 240 lb pick with no throttle to get over the whoops, and after pushing it so far I wasn't about to pull the brake. Well near the bottom before another uphill section I decided to put it in gear and pop the clutch. It fired right up and I flew up the section and when I got on the road I opened it up and got about 1-2 miles down and it just stalled again. Since then I turned the flywheel and it had friction but it turned. Drained the oil and no metal or chunking. Any ideas?? I will probably end up pulling the kick start tonight to find out if I can possible find something.