08 450er jetting qusiotn

[Grant Casey]

mods
lrd full exhuast
ehs racing lid
grren wire mod
boysen quickshot

this is my problem it pull real hard all the way to the top but at top it dies off ay, and when im on the spot reving on the rev limiter its not fast its real rough lol
i had a 165 main in it and a NCQv neddle i think on the 4th clip
i went down to a 160 main it fixed it a little . should i go down to a lower main ?????????

[miles Machine]

if your needle is on the 4th groove down from the top id move it up one

[Grant Casey]

yera fixed it ay mate,,, went down to a 155 from a 160,, and drilleds more holes in my stock airbox lid and yea it gose hard as ay