Wow,
That's a beauty Jooles!. [Linked Image]
By the looks of the cabinet, it's brand new. [Linked Image]
Replacing the old paper capacitors in a radio like this is often the best thing you can do, paper capacitors become noisy after a length of time.
Ahh, the magic eye, I never thought I would see one of them again.
Testing a radio or any other bit of gear through a series resistance is a good idea, but can also give you a false sense of security too.
I'd personally use an isolating transformer.