[mikethedruid]

Perhaps the lesson here is to accept the patina that comes with age. Clean the parts involved, but leave the patina, and concentrate on the electronic rejuvenation. Get them back to working as well as they did the day they left the factory, but leave the look of age which they proudly wear. Only make those cosmetic changes needed to make them presentable, but don't try to make them look new again. Most people who see an obviously well aged item which operates as well as the day it was made are more impressed than they would be with the same performance from a shiny, new looking object. I have many examples of that, my Edison Opera model cylinder phonograph, my floor model Victrola, and many of my radios.