The secret to getting your DUAL CARBS to march in lock-step is LINKAGE, (assuming you have two IDENTICAL carbs, which may be the biggest hurdle these days). I know, I learned the hard way, linkage must be fully adjustable and not junk. As you crack the throttle, the throttles must open exactly together, look down the throats and make sure. Think inside the CARB! Once this is achieved, you then can use the Unisyn or what ever trick you want to check out flow of air/fuel and adjust away. I believe if I didn't have a collection of BXOV-2 Strombergs I'd go with Langdons dual Holley-Webber set up.
Enjoy!
