Why are you running that adapter plate? I'm totally lost. None of this makes the least bit of sense.
If you have a square bore carb (and I think you do but some better pictures or the LIST number off the choke horn would help a bunch, as would what spark plug you have) and a square bore intake manifold, why in the blue oatmeal hell is that adapter on there???
If you have a square bore intake manifold, and a spread bore carb, take the carb, and the adapter and get yourself a BFH and beat the living **** out of both of them so some other poor sucker doesn't end up with that junk and then throw that crap in a river and let the fishes use it for a playground.
This thread is never going to help you if we don't know what you have. And from the looks of it, some of it is straight junk.