[Radio Wrangler]

Choosing replacement wire with heat-resisting insolation can make life a lot more pleasant when you're replacing it. there will be less strain on your vocabulary.

Silicone or Kynar would be my choice. PTFE is a devil to strip, so if you come across any cheaply, smile knowingly and walk past.

As tanuki says, lots and lots of paper capacitors of an age and reputation where you may wonder about whether to bother testing them. Some are in interesting cans which bolt to the chassis at one end. These may be considered restuffing candidates. It gives you somewhere to put the new things. While you have larger roadblocks out, exploit the opportunity to measure and change any resistors while the access is easier.

David