[Phlogiston]

Russ;
  Just a thought on that wire wound that's on the resistor board, I looked up the set and found out that there was a 3 Watt carbon resistor in that position according to the parts list. It may have been replaced by a service man or it may have been a production change since it looks like they shrouded it in fish paper, either way putting a 5 Watt wire wound in it's place was a smart move. 
Regards
Arran

Yes, I believe all of that is true. The fish paper is factory installed.