4bbl running rich.

Well Rusty. You are right. Was hoping for an easy fix like, "you need a lefthand monkey wrench". Ive never had much trouble with one of these carbs, have always been simple to tune but the mods are, as you say, extensive. I'll have to pull the stats and come back when I have more time to discuss.
It's not hard to do. It's a little involved, yes. But as I said, we need to know what we're dealin with first and we can give you some accurate help.