..this is from the 5th issue of the 2002 Team Green news .
Recommended from Sea Level to 3000'
Temperature average of 70 degrees
40:1 mixture
92 Octane Fuel
KX 500
Main 170
...That one caught me by suprise, but may be related to extended durations of WFO.
Needle: N82M (stock) in postion #2
Pilot: 55
Air Screw: 2 turns
Spark Plug: B9EVX ...This also makes sense from extended WFO's in Southern California. In the cooler woods of New England I Like a B7EVX
I also have to Thank Dirt Bike magazine for mentioning the fact that while you may get your KX500 jetted spot on .... it won't sound that way.