Silvertone model 4663 tombstone working original circa 1938

[wa2ise]

Thing is that wax caps will go bad used or not. Moisture from the atmosphere gets inside over time. The moisture then reacts with the acid in the paper, which in turn causes electrical leakage. I think the military did not allow defense contractors to use wax caps, and maybe your radio used mil spec caps (they got a good deal on surplus parts?).