Emmett, did your new carb come with a set of instructions that includes a diagram of the carb identifying the intended use for the various ports? If not, what is the model designation, and a Google search may well turn up some information in the form of install posts or tech support information. Off hand, I wouldn't worry with any of the ports that were not hooked up before. Sounds like your replacement carb covers some newer models, too, which likely had more pollution stuff that required different vacuum sources.