Garrettporter wrote: . It has stock jets. The needle valves that let fuel into the carb bowls are aftermarked. The floats have an adjustment fin that holds the clip of the valve. The factory nominal float hight is 22mm +2, -1 tolerance. With aftermarket valves the fit is correct but the height is a few thousandths off making for a sob of fine tuning.
Sorry for confusion. Valve twist - slang for adjusting the valves by twisting the adusters at the head
Interesting. I started working with screw-type valve adjusters 30+ years ago and have never heard that phrase. Maybe it's regional.
And having the floats set "a few thousandths" off is not going to cause the lean condition you have; we have covered the reasons for that already. And the fact that the float height has an acceptable range of
3mm should tell you that this is not a fine-tuning adjustment.
To be kind of blunt, I'm not sure you understand what happens inside the carbs but would encourage you to spend some time reading the forums. There is a search function at the top to help you find what you need.