Gordon just for curiosity I'll give it ago. Got a road trip this Saturday so will have ago.
The air bleed screws are still set a 1 1/2 turns out. Will start the road trip this way and turn them in all the way in has suggested and re-sync them and see if there is any difference.
Im agreeing with Danny that they only come into play when the butterflies are closed, but still curious.
What l do find annoying, when it went on the rollers, the guys playing with the jets etc never picked up the carbs were out of Sync of idle. I knew something wasn't quite right but in away accepted it.
What I'm thinking is, if at idle the carbs read 5 on the Snails @ 850rpm and at 2500rpm they read 18 and 12. Then what what would they have read at 7000rpm.?? Not that I'm going to rev the **** out of it to see. Do you see what I'm getting at?? At idle if one carbs reads 5 and the other reads 3.5, that makes a big difference how smooth it runs. So with a difference of 6 at 2500rpm. It should be a considerable difference in how much smoother and snappier it delivers it power. Would you guys agree?? Or am l thinking to much lol. Easily done.