Been working on 1982 CB900F project for few months. Bike was running poorly when purchased, 13k miles. Removed carbs, they looked in good shape but cleaned passages, replaced acceleration pump, gaskets etc. Cleaned but kept stock jet sizes. Did not break carb apart, so did not check air cutoff valve except on carb #1 which was in good shape. Replaced carb and air box boots. Shimmed all valves to high side of spec about .13. Bench synced carbs so that all butterflys barely covered front pin holes. Compression is 170 to 165 across all cylinders. Took bike for ride today. Starts right up. Idles rough a runs rough below 2500rpm. Above that bike pulls like a mule and accellerates almost pulling your arms off and runs smooth. I'll bet I need to pull the carbs off again and do a break apart cleaning. Short of that, any suggestions?