HELP HELP HELP ! LEAKING CARB 2BBL 318 72 DART need help with this

If you have it in the budget, go ahead and take it and get it rebushed and rebuilt. Sounds like your throttle shaft/bushing area is very worn, not just a little worn. A little wear in this area won't allow pooling liquid leaks when the carburetor floods or you spray carb cleaner in it. The repair will pay for itself in improved fuel economy alone very quickly with $4 gasoline.