I bought an 86 250r today

It is bored to a 265, i run 40:1 racegas/oil it has the stock carb paul turner racing pipe and reeds. I put a new plug in and a new Kand N. I am running no lair box lid

I am at a 170 and it sputters at wot.

I am 1.5 out on the fuel mix screw

Middle clip on the needle

Any help or suggestions would be extremely helpful

Thank you
Josh