I have a brand new WR 450. Dealer instaled YZ exhaust cam, instert in the exhaust, cut the grey wire. Bike runs fine and it will start cold on the the third kick every time. Once the bike is warm the will start every time first kick. THe bike will not start cold witht he push button, when it is warmed up it will start using the button if you pull the choke out. Cam timing, valve clearence, and fly wheel key has been checked by dealers and they can not find anything wrong with the bike and also do not recomend and jetting changes because hte bike is running fine otherwise. Anyone have any idea what is going on.