Losing my mind trying to get this 360 to run right

Will the power valve effect the idling? It's been a long time since I've messed with a Holley, all my last carbs were Eddys which were pretty straight forward yet not very tunable. I'm wondering if the idle circuit on the metering block is plugged? I rebuilt that carb about a year ago and I ran it on another motor for a short period then pulled it off and it sat. It may have gotten some crap in it so I'll pull it apart and inspect it before I buy a new one.