Try a 100 main and a 27.5 slow jet. You will struggle getting that tuned just right. You didn’t mention a bore so I take it you haven’t increased your bore size at all. I would invest in 3 different main jets and pilot jets. I think the 22 comes with a 100/30.. if it was me and it has been I would have on hand a 90,95,100 main and 30,27.5 slow. Try jetting 1 thing at a time. Get your idle dialed in and then go for the main. The mikuni is a bit tricky to get dialed in at times.
90 nickolson Bored and Stroked "The Good"
Big Bore 110 Pauter frame "The Bad"
90 Bored and Stroked “vey’s frame” "The Ugly"
110 JSC frame Bored and Stroked
flat track build. “Shop trike”
1974 original 90 X 2
1974 Original 70.