actually scratch that last port (venturi vacuum signal) that's not the same as whats shown in this manual

https://docs.google.com/file/d/0B85S9Twi0dSUY2NuYWRGa2pOVjg/edit?pli=1

If you look back at one of my pics i have a port right at the bas of the carb. I will take a look at one of my busted units and see where it goes. I think it might be a direct vacuum port right below the butterflies.