getting the baseline on multple carbs is always a challenge. If you get 3 new ones and set the screws to a reference point, youll probably be pretty close. The sync or flow meter is a device that you put on the intake horn and tune to get a set vacuum level. Do that 6 times......and then youll have to adjust the idle..on all 3 unless you run a linkage that allows minute individual carb changed via a nut, most all have them. Its a labor of love. Once they are set, your golden.
