Some searching of the archives and some staring at the manual. Then I opened the manual and read it.

The re-sealing of the P/S pump doesn't look too hard. Don't know if any internals are worn out but it leaks like a seive.
The steering box looks quite difficult to re-seal, as it comes completely apart in essence to replace all seals. Many special tools needed.

The play in the box does not seem bad. My unofficial test was with the box on the garage floor, pitman and coupler attached, hold the pitman arm and rotate the coupler. On changing directions, a click was audible, nothing more (clicking not coming from the coupler). Any visual play was not noticed, just a click.
With the tame steering geometry of the 115, I'm hopeful the box is not worn out.
I'm wondering who can reseal the box. I won't accept a piece of junk "rebuild" that will be worse than my own. I'm in the Bay Area. Maybe I'll see if Larry Bible would re-seal it. Autozen?

Any thoughts?
Thanks

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63 220S W111
76 300D W115
2013 VW JSW TDI M6

previously-
73 280 SEL 4.5
86 300E 5 speed
2010 VW Jetta TDI M6