Well that's exactly what I'm going to try tomorrow. I already have the same step up Springs I took them out of the old carbs and throw them in.. then I noticed on my records I have only about three quarters to one turn out on the idle adjustment screws which Factory is about two turns out. I'm going to screw them in and take note of where the factory setting is, but start screwing them in. Let's see if things lean out a little bit. also on the Edelbrocks I went one step leaner on both the primary and secondary Jets and have those ordered and should be here in a couple days...