2008 YZ450 Bike is hard to start when it has been shut off for 10 minutes or more. Strange problem. I have searched on hard starting and nothing really helped. Bike is at 4500 elevation and the temps run from 20-80F (high desert) JD red #4 168m 45p FMF exhaust, 2.5 out on f screw It runs like a champ, no bogging, hesitation ect... Valves are all in spec. When the bike is cold and its cold out like below 40F is will usually start on the 5-6 kick using 2 twists of throttle, choke out and kick w/ no throttle. Sometimes it will flood a little bit and will have to pull in hotstart and it will fire. When the motor is warm and I have been riding, I can shut it off and it will fire right back up using hotstart. BUT if the bike sits for 10 minutes or more, it doesn't want to start! Driving me nuts! The biggest problem is racing because of dead engine starts. I'm getting killed! It will start but I have to kick it like 10 -20 times. My guess is that its got to much gas? Searching the forum someone said that adjustments for starting the bike are only in: Float bowl height Starter Jet Idle speed (rpms) Starter jet is stock, Idle may be a little low but not much, I have never checked float height. The Carb is cleaned out every 6 months Any thoughts?