Well no replies but this is what i went with. I ditched the whole entire fmf jet kit in my 03 450. Junk im sure most of you know this but dont ever waste you time with one. I wound up using a 170 main with a 45 pilot, stock needle in 4th position. So far so good. Just took it for a quick run but no bog powered through all 4 gears, guess i will find out better in the trails.