I have a 2011 yz450, and I understand they are very different bikes. I know that the yz450 guys have found that when you are trying to start it when hot, it helps to give it just the slightest crack of the throttle, barely any at all. It usually fires right up. Anyone try that with one of the FI WR450's to see if it helps with starting at all? I even do this with my carbed '08 and it always seems to work better this way.