As long as I'm asking a bunch of questions, what's the best method for removing the copper plug(s) on the side of the carburetor? And what's the best method for installation?

I know this pot metal is soft and often brittle. I don't want to mess anything up.

What is the large plug for and why didn't Carter just use threaded fittings instead of press in plugs?

1950 Chevrolet 3100 (Ol' Roy)

1939 Packard Standard Eight Coupe (The Phantom) | 1956 Cadillac Coupe de Ville (The Bismarck) | 1964 Ford Galaxie 500 coupe |1966 Ford Mustang (Little Red) | 1969 Pontiac GTO (The Dishpit) I 1979 Ford F-100 | 1976 Ford F-150 (Big Red) | 1995 Ford F-150 (Newt)