My carburetor keeps dumping gas

There is nothing wrong with epoxy on that plug. If you undo the crimp on the die cast to replace the o-ring on the aluminum plug, most likely there won’t be enough diecast left to recrimp. You can take out the N&S and clean up everything out real good and try it again. While there is almost no carb that can’t be made to run right, those spreadbores often prove to be more trouble than they are worth.