[Arran]

Put it this way, if you can repair a rubber wired Philco you can repair almost anything. Philcos aren't always easy sets to repair, Mr. Ramirez offers a coil rewinding service for a good reason since it was a known fault with some models. But once they are working properly I haven't found any to be a mediocre performer, even the AC/DC Transitone sets, which also used rubber covered wire.
To be fair rubber jacketed wiring was uniquely a Philco problem, most manufacturers in the early 40s, and even after the war, used it. I had to almost completely rewire a Crosley AC/DC set a few years ago and it was a 1946-47 model, once I started replacing the condensers and disturbing the old wiring much of the old stuff started flaking off, I used 18 gauge solid core vinyl covered stuff to replace it.
Best Regards
Arran