This is what I run with great results. Still has room on the air screw for altitude and temperature adjustments, without turning it out more than 2.5 turns out. Runs crisp and clean, but not to lean.
Bike year & model = 2008 Gas Gas DE 300
Temperature (degF) = 45-85
Elevation (feet) = 250'- 5000'
Main jet = 178
Pilot jet = 35
Needle & notch = N1EF 2nd position
Air screw setting = 1 to 2 turns out depending on temp and elevation
Throttle valve/slide = #7
Make sure you check and adjust your float for the best mileage possible.
Don't hesitate to call Les. He has other methods using his needle etc. They work flawlessly also.
Roscoe
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