[Jamie]

Originally there are three electrolytics on this radio, one 16mf can and a dual 8mf. Which one has positive going to chassis?

The 16mf can had one lead. I assumed it was positive and that it's chassis was negative, and soldered in the new one accordingly.
The dual 8mf can had two center leads and one off to the side. I assumed the dual center leads were the positives and the side was the negative. The news ones are installed accordingly.

Part of the previous repair was a wire jumped from that side lead on the 8mf can to the chassis. This wire has been removed. This solved 75% of the hum problem. Also, cap no 68 was not the original cap, someone had replaced it, the replacement was huge and it was totally melted.

Since I last posted, I've found another wiring alteration, corrected it.. and now the hum level is down to just barely there. The radio plays extremely well, and tunes in distant stations. To be honest, if I weren't a perfectionist, I'd call it done. But it still has a slight hum, and I am determined to fix it. If one of the caps is wired in backwards, please let me know which one.