a friend of mine has an 04 yz 450 that is hard to start when it is cold. once its warmed up it never takes more than 2 kicks even when its hot. when the bike is cold it may take 20 - 50 kicks to get it started. we have pulled the plug and it is pretty wet. he isnt giving it any throttle at all, and usually after changing the plug it will fire up within a couple of kicks. any advice would be appreciatied.