Carter AFB 9636 ?

High fuel pressure can cause trouble, especially if somebody has put larger needles/seats in the float valves. Also, make sure the floats are shutting the fuel off.

How far are the primaries open? Your combo sounds pretty mild (like a stock carb should work OOTB). But, if the primary throttle blades are open far enough to uncover the transfer port, your main circuit might be coming into play.

Other check, make sure the rods are going down all the way at idle. Remove their little covers, start the engine and they should "suck down" right away, and at the same time. If the rods are up at idle, you will be stupid rich.

Two things to try, but try them one at a time independently. Go down one jet size (if you use Edddy jets they have a different numbering system) and see what happens. Keep same rod.

Lower the float another 1/8.

Either one will lean you out across the board.