[Rob Quay]

Got it! The radio is working very well- no hum and good reception. The final step was  checking the wiring at the volume control and cleaning up the tube shields. There’s still a thrill for me when these relics from the past come back to life! And that’s after sixty some restorations! 
This particular radio was bought by my grandparents in 1940 and was their WWII information source. Thanks again for your excellent advice! - Rob Q.