It’s possible, but doubt it. The fact that the choke helps makes it seem like enough fuel is getting to the carb. I assumed you set the float level correctly.
I’d spray carb cleaner around the outside of the carb to check for carb-to-head boot leaks while it’s running. If not, take the intake off and watch the needle rise as you push the throttle. I imagine that’s where your problem is. Did it have stock jets before? How many turns from seated was the old carb’s mixture screw? Is the needle adjustable and on the same setting as the old one? What you’re describing could also just be a matter of adjusting the mixture screw out a half-turn or so. If it doesn’t help, turn it back to where it was and look elsewhere.
94mm bbk, +4 stroker, Hot Cams, Vertex piston, FMF Power Bomb header and Power Core can, KW black diamond valves/dual springs, FCR39, K&N, Elka long-travel LT fronts and rear, Houser +3, +3/4 LT A-arms, American Star pro xs chromoly tie rods, Dyna non-programable, Tusk +3 axle.
Last edited by jetmech25; 06-11-2019 at 01:08 PM.