[Reece]

For the frozen-up tuning shaft, put some penetrating oil, WD-40 or whatever is your favorite for freeing up frozen fittings and let it soak for a day or two. Then try heating up the bushing through which the shaft goes with a good-sized soldering iron or carefully with a propane torch. The idea is to expand the bushing slightly away from the shaft. Once it moves you can get some more oil in there.

If the capacitors look like the originals, which they do from the pictures, you can safely go by their values. Even if something is a little off from the schematic, the radio did work and left the factory like that, and often changes were made during production.

Finding an original or similar speaker is important for earlier radios with field coils, but a small PM speaker in a post-war table set would have been pretty generic.