It's completely random. Sometimes it fires on the first kick sometimes it won't fire at all and I'll have to bump start it. Once it's started it runs like a champ. I'll try it with the choke on.. with it off. I'll try hot start. For the first 10+ kicks I won't give it any gas. Then I'll give it a little... still won't work. The jetting I have is: Main: 168 Pilot: 45 Needled: 4th clip from top Fuel / Air Ration: 1 1/4 - 1 3/4 turns out Fuel: super unleaded 76 Air Filter: Uni-Filter Exhaust: White Bros. Aluminum Pro. The wierdest time this happened was at washougal. I went out for my first practice, then went to go out for the pro / intermediate practice which was like 15-20 minutes later and the thing would not start. Every time I come in from a ride... I rev it out to make sure any excess fuel is burned out... I just can't figure it out. Could it be that my valves need to be adjusted? Does anyone have any ideas? I'm getting to the point where I'm scared to go to the line because I fear my bike won't start. Any help would be appreciated!