[Phlogiston]

What Morza is pointing out is important. An 80 rectifier is rated for a first filter of 10 uf (MFD). B+ is also usually higher using larger filter caps, which is already a problem because of the higher line voltages of today. Another problem with these old radios is - tube warm-up time. The voltage in the first filter can go way up waiting for the rest of the tubes to begin conducting. This is also a good reason not to test with the speaker's field coil unplugged.

P.S. when you pull out the old caps, don't throw them out. Several of the forum members would appreciate having them.