Thanks Dave & Brian,
I tried to locate that topic in the forum and couldn't find it. Do you have any idea what keywords I should try besides Rochester + Model + B?

Dave, have you tried to run your B with the hole? It seems as if that the hole would cause the carb to flow lean due to the vacuum leak it creates. In addition, I am not crazy about the amount of dust that would be sucked into the hole.

I think I need to plug the hole. However, I am not sure how to plug it. Anyone have any ideas?

Jon