Not trying to change your mind, but why are you removing the 3x1?
For the price of a four barrel intake and carburetor you can gold plate the linkage on your 3x1. Of course if you are having other problems with the carbs???
Linkage for a 3x1 setup is really quite simple. You might have solid linkage in which case all carbs open simultaneously; or you might have progressive linkage in which case you hook the footfeed to the center carb, and hook the end carbs to a higher point on the center carb. You control the opening of the end carbs by the proportion of the distance from the throttle shaft to the two linkage arms.
Jon.
