This is an '05 yz250f. Won't restart worth a damn if I stall during a harescramble. Hot start button dosn't help, choke doesn't help. Kicking with throtttle wide open about 10 times (or until it catches) then kicking with throttle closed sometimes helps. Jetting is a 178Main, 40 Pilot, 1 1/2 on the screw, stock needle #4 posit, spark plug is fresh and has good spark, air cleaner fresh and valves checked and within spec, float level in carb is correct. Runs great with good throttle resp and no bog, starts fine cold. Any suggestions on what else to check or try? I'm at a loss on what to do next.