Sorry I have been absent from the discussion. - My "system" does not notify well of thread updates and if i forget to come back and check I miss a lot of content. I see you fella's have been busy

On the Saito 72 - Can you get reliable idle and top end settings with no bleed air flow. If not check the system for leakage - a tiny bit is acceptable (even preferred) as it keeps the bleed clear of fuel buildup. too much would make setup hard. Looking at the valve it might be a bit restrictive when open. The valve needs to flow the full unresticted flow of the feed line on most of my setups. I think I might also be one size bigger in feed line on the 90 I have running well. My cheat for this would be - if you have a good idle - unhook the valve and pinch the end of the line - advance the throttle to a bit less than half and see if you can adjust the pinch to make it run well at that setting - if the line is wide open and your still rich - more air is needed.

hope this makes sense.

Chris