Where you go from here is to check system pressure and control pressure and see if you are getting fuel, like I spent a fair amount of time explaining to you a few days ago. Whether or not you have enough time is irrelevant to finding out what the real problem is.

The idle air screw does not affect the lean the mixture. If you screw it out, it increases the amount of air at idle, which in turn increases the amount of fuel, which in turn raises the idle speed.

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Chuck Taylor
Falls Church VA
'66 200, '66 230SL, '96 SL500. Sold: '81 380SL, '86 300E, '72 250C, '95 C220, 3 '84 280SL's '90 420SEL, '72 280SE, '73 280C, '78 280SE, '70 280SL, '77 450SL, '85 380SL, '87 560SL, '85 380SL, '72 350SL, '96 S500 Coupe