Help !! Running super rich.

Fixed. Can only assume combination of things. Main thing being the idle and the transfer slots. I disassembled the choke because it wasn’t doing anything. Like it was locked in place. Not allowing me to adjust the idle screw anymore. Took choke apart. Put it back together without connecting it. No tension in it. Perfect little squares on the transition slots. Now I will set choke after completely cool. Both of the new carbs must of been the same I would guess as far as the 2 new hollies. It did run much better with the old 750. But was a bit to much carb along with timing being so retarded causing that one to run funny. Thank you all for your inputs. Lol. Didn’t mean to waste anyone’s time

You've wasted no one's time. You actually came back and updated, which we rarely ever get. Thanks! Where did you end up with initial timing?