55/158 is what I have in mine. Works well where I'm at here in central muchigan. I may go to a 58 pilot and 160 main though. I have to check my plug for color yet... I also have an adjustable needle from dyno jet. Your main jet is probably way too small with the DJ needle and your pilot too big. The DJ needle is made to work with a stock pilot and a large main. The DJ 160 and 165 from the kit are equivalent to Keihin 178 and 182 main jets.