I ride from 6000 to 10000 feet and mine is jetted tits on for 75-100 degrees...im running a 275 main, 27.5 pilot, clip in the middle and the air screw 2 turns out...most my riding is actually done around 8000-10000 feet, i just live at 6000. Basically same setup but my pipes are different. I run FMF Fatty Gold series with powercore 2 silencers, k&n no airbox lid, stock carbs.