I'm trying to get an 04 YFZ450 right now, it's got the gyt-r slip on with the quiet core/spark arrestor insert, or whatever it is. Airbox lid is removed, stock air filter. This is in the high desert in california, elevation a little bit over 3000 ft and low humidity. Right now I've got it at a 169 main jet, the GYTR needle on the second position from the top, I lowered it one notch cuz I felt it was running a little bit rich. Anyone else jet with similar setup in similar conditions?