Holley Idle mixture screws non responsive?

Don't worry about total right now.

Get the initial idle timing set and the carb adjustments done. Leave the vacuum adv disconnected and plugged at the carb! Once you have that done, you can worry about restricting the mechanical so the total isn't out of sight.

Close the secondaries back down and start over. Adjust the floats, baseline the mixture screws and move the timing up another 4-8 degrees. Get it hot and see if it kicks back on the starter when cranking, if not, you're good.

I will give it a go again this weekend after christmas, I am pretty sure I have plent of room to move up before the starter kicks.. I have toyed with it before. I will report back when I get some time to play.