Another edelbrock carb question!

Before I started it yesterday I changed the squirters back to normal and then drove to my buddies and that's when I noticed the idle and "hunting" for an idle is a great way to describe it. Then I tried the timing and idle mixture screws but the timing didn't work out so I put it back. My distributor is a stock unit with the pertronix set up, and I'm also running a digital 6 msd box. The PCV valve is just a basic style kind, I never knew there were different kinds.