[WallaceRoger]

Are the shafts and such still ok to the point you can turn them? Looking at your photo of the tuner up top, if this is really just zinc alloy you may be able to disassemble this piece by piece and heat up each individual disc enough to slowly soften and flatten it between a couple bricks or hunks of steel.

You could even theoretically make up some molds using one of the old pieces as a guide and form your own parts. A 4 pound ingot of Zamak 3 or 5 is only about $11. I'm not sure what your setup is like or if you want to go that far.

https://www.rotometals.com/zamak-5-ingot...1-zinc-95/

I like the Band Box, especially the big external speakers that sit on top.