The 145-.149 " size range hiperf needle and seat is too lrg for street use in the q-jete and on hot days can often lead to floodig over etc,they are meant for strip only.
That's why i always rec the .130-.135" range hi flow needle & seats that are larger & flow better then the stock .110-.125 " needle and seat do and are avail online from Gessler head porting srvc and unlimited carb .
Scott