There is no window on the Stromberg. As I said, IF you had one, you could see the gas. It's almost exclusively a feature of Japanese carburettors. Have you tried a bit of gas or starting fluid down the carburettor throat? Sounds like, at best, you're getting gas to the carb but there's a blockage at the inlet pipe or valve.

Happy Motoring, Mark

__________________
DrDKW