Help with QF HR-750

Recently slapped a quick fuel hr 750 mechanical secondaries carb on my 340. Pulls like a mule but is super rich at idle. Blows a tiny bit of smoke. Rings are healthy. I was having a problem with a hanging idle but I found this to be that I had the idle adjustment screw in too far. Backing it off helped the problem but I cant get my idle high enough for the cam. I changed the air bleeds up a few sizes but the sweet spot for my idle mixture is only about 1/2-3/4 turns out and its still rich. Not pulling a ton of vacuum at idle. around 5in but this cam is pretty big for a small block. Curious if I should go higher with the air bleeds to get the mixture screws within normal range? too far in idle goes down too far out idle goes down. is this just too much carb? anything helps. Thank you :banghead:

James