Hello and Happy Fathers Day to all the Dads out there. I am trying to tune up my newly refurbished Quadrajet from Quadra Jet Power. The instructions say to turn in idle air screws until engine stumbles then back out until I get highest vacuum or RPM. The more I back the screws out though the higher those two get without a limit. The screws are all loose and I'm concerned they are about to come out. Is there a different way to adjust the carb or a step or something I'm missing? Thanks for the help. (Also a whole run down on carb tuning would be great seeing as how the choke and other things are also out of tune) Thanks again.