[Chris h]

Well, I finally worked my way down to the filter block, mounted at the back of the chassis. With the help of a heat gun and a drywall screw I was able to remove the insides using a Stanley Wonder Bar. The tin plating on the outside was gone, replaced with a light coating of surface rust.  I hit the outside with the bead blaster and removed the rust. Then painted it with metallic paint. It is not as good as the plating, but close.

I started cleaning the chassis, a little, with a combination of brushes, the vacuum, and some Krud Kutter.  There is a mixture of nicotine, dust, grease, and a black film, over most of it. It won't look like new. Maybe like it is just 80+ years old, with the normal wear one might expect for something of this age. I am not quite sure what the black coating might be. Perhaps soot from an oil fired furnace? Who knows???

I am debating pulling the tuning cap and running it thru the ultrasonic cleaner. I just haven't gotten that far yet.