What is the octaine rating of USA fuel. Most of your jetting tips seem very rich compared to Australia. If I ran a 180 main in my bike it would load up and die. I am running 96 octaine Super in my 2000 WR with YZ cam timing, open airbox, Staintune Exhaust (Austrailian made and great) and it runs well with a 168 main, 45 pilot, 1 1/3 pilot screw and standard needle (DRQ I think in Aus) 3rd clip. I know Australia's needle is richer than the USA, but there must be a big difference in fuel quality. My bike will pull 175kmph (110mph) with standard Australian 15-50 gearing and hit the rev limiter so it seems to be going well. Even a 172 main droped top end power down and made it burble in the midrange. This is at 1000 feet. Maybe all the Olympic Athletes have used up all our air!!