If you can borrow the 2 circuit then give it a try. If it is setup up close for your combination it might just work.

You can also make some changes to your 3 circuit. It is best to have a wide band to set up a 3 circuit but you can do it old school also. One easy thing to try is to remove the intermediate air bleeds and see how it runs. Holley left the air bleeds out on some 3 circuit carbs. You can also reduce the jet size on the intermediate circuit just to see how it works. Every 3 circuit that I've ever worked on was dead rich in the intermediate circuit and needed to be leaned out a ton.