hey guys, thank you for the information!

I will see what I can come up with here w/ jetting changes.

Bill, my mods are:

2004 Yamaha YFZ450
Ron Woods full exhaust
Cam mod
CP Race Piston 94mm
Velocity Intake w/ airbox removed

I'm in DFW, Texas which is roughly 600ft above sea level. Temps are roughly in the 50's these days.