Full throttle no percieved problems, idles great, real low speed light throttle is good. But, I get to 45 and on up on steady cruise and it's hunting/surging continuously. My guess is either the needle needs set higher, or needs a needle with faster taper. I don't know bike carbs much at all, let alone the CV that I think is on here? Do they even have a tapered needle like the bikes I had 20-30 years ago? If so am I in the ball park with moving the needle up? How do these vacuum sucker carbs funtion as far as cruise mixture goes?