The problem is in the first sentence of your post- - - - -"Rochester". Find a correct Carter YF carburetor for your application, install it, and drive on- - - -problem solved! Two barrels on a 235 is one too many. The only possibly worse choice would be two one-barrel carburetors.
Jerry



"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!