I hope someone can point me in the right direction on how to solve this problem. Here are the details Northern California 60 degrees Altitude up to 1500' 168 main 48 pilot stk leak 2 turns out air screw FMF 95dba spark arrestor 06 cdi 60 hours on motor The bike starts fine cold. When it is warm or hot if I crack the throttle 1/4 open it fires the first time, if it does not start on the first kick it could take me 10 kicks to get it going hot start does not matter. It will sometimes start if I hold the throttle wide open after a half dozen kicks. If it sets for 30 seconds or crack the throttle 1/4 it will start. I had it hicup(stall) 4 times in a race yesterday and took me forever to start it. In the pits 3 guys had to push me to get it going. It runs great.Nice to loose first place because it won't restart. I get no decel popping. I'm going to check the valves today. ANY IDEAS? I had a 45 pilot last week which made no difference.