what jetting

[riderssb250x]

im putin my r motor together soon and was wondering what I should start off with for jets and needle position,

I have--
fmf fatty
fmf powercore
boyseen reeds and rad valve
stock 34mm pj carb
open box
k&n filter
wiseco piston .60 over
new rings

let me know thanks guys

[Honda 250r 001]

158 main and needle on middle clip maybe in the 4th clip. and around a 50-60 pilot. try a 55 first.