Rochester idle adjustment

[Hawssie]

I have a new Edelbrock brand rochester carb I bought years ago and right before they discontinued them. The Chevy parts guy I knew at the time said these were better carbs then the typical Holleys most people were buying. ANyways it and my new crate motor our now running pretty good but the idle is a little high. It actually sounds about right but when I shift the tranny I really need a lot of brake to keep here from taking off, which way is too annoying.This brings me to my question, I went to turn down the idle but it was already at its limit. I cant figure out any intake leaks. I am not using the PCV system if that makes a difference and the thing has about 8 or so vacuum ports but their all plugged except for one that doesn't seem to have any vacuum anyways. Is this normal or what should I try. I am at a disadvantage because I am saving up for new gauges and right now all I have is idiot light gauges so no Tach. Are those air fuel meters good for maybe this and other adjustments I may need to do in the future?.