it is hard to say about jets , as I am not sure of the pipes you have.
but my friends bike has the stock air box with K&N stock
replacement filter, stock pipes completely gutted.
and 150 mains jets are about perfect.
I would sugjest that you start with 42 pilots ( stock )
turn out 3 turns.
150 mains and put 2 shims ( brass or stainless washers )
under the stock needles.
then take it for a ride ( not to long ) and see how it goes.
then let it cool and check the plugs.
now these are just guesstimates , without knowing what you
have in there now.
if you can get several sizes of jets and step down 5 to 10
from what you have that seems to be making it too rich.
if you go too far too fast you could get too lean .
