I've been dealing with the same carb and curb idle adjustments at 1.5 turns out A/F(running rich). I started changing air bleeds both primary and secondary with little success. I'm having better luck going to smaller IFR's idle fuel restrictions on the metering block. I went from whatever the stock restrictions where down to .029 then down to .025 and i may end up with .020 to get it just right. I want to achieve about 1.5 turns on A/f adjustment currently I'm at 3/4 out from seated position. Also, if you haven't adjust your transfer slot to .020 you may need to do that first. I'm doing this by a 4 step process of tuning. Not necessarily in order of best vacuum reading, timing, a/f ratio, and seat of the pants.
