Yeah... the Silvertone is a pretty cool set. It will be going to my friend in Houston. Actually, I'm pretty jealous!
I took it apart a few hours ago to see what was in it. Come to find out, it still had all of the original capacitors in it! Being that it played, I was expecting to find at least a few replacements in there. I replaced all the caps, and just got it back together a few minutes ago. Plays much better now. The AM dial pulls in more stations, and the shortwave gets stations all across the dial (shortwave didn't work at first). I'm very pleased with the way it came out.
I still need to do a patch job on the speaker. I'll probably use either hot glue or silicon caulk. I would guess the silicon might be better since it can move more freely after it dries than hot glue would.