I just bought an '06 WR 450 and when I start it I need to leave the choke on for a good 5 minutes or so. If I turn the choke off before this it will stall. The engine is pretty close to OT by the time I can turn the choke off. Just about every other bike I have had I could turn the choke off very shortly after starting. Leaving the choke on for a long time has the potential for fouling a plug. Anyone else notice this with theirs? Will any of the 'free mods' people speak of take care of this?