In some pixs the HV cup looks quite messy & HV rect socket turning green.
The filament winding arc is common, replace with flexible 20 KV wire.
I see two pix of white lines. One hoz & the other vert. The kind
of problem that nobody wants, at least without a full suite of
test eqt. & tube collection.
Good little sets IIRC only built for a year or two.
Zeno