I have a question about Weber Carb Vacuum ports. My set us a 56 Chevy with an I6 250 motor. It has new offenhauser intake and 2 Weber 32 DFT carbs that I bought from Tom Langdon. Each carb has 3 vacuum ports on the side. I don't know where each gets connected. Any information, diagrams or pictures on how to connect these would greatly be appreciated. Thanks to all for the help.