Hi Knute,
And here is my solution (eighth-note-stems-my-solution.ly produces
my-solution.png). Is it readable? Should I try to make it look like
the old edition? If so, how?
If you want to mimic the old edition, you could do:
\once \override NoteColumn.horizontal-shift = 0
\once \override Beam.positions = #'(2 . 1)
just before the c-flat a-flat.
I think I like this solution; but maybe one should shorten the stems for
e-flat d-flat before also, to make the look more similar.
Also thanks for implicitly showing make-voice-props-set - I had never
researched the internals of \voiceTwo etc.
Lukas