Gentlemen,
While using \voice 4 does replace my incorrect use of \stemDown, it does
not locate the note head properly.
To do this a column shift is necessary.
This code is a combination of your suggestions.
\voices 1, 2, 4
<<{c'2~ c8. dis16 e8. c16 | b2~ b8. dis16 e8. b16 |
a2~ a8. b16 c8. a16}\\
{e2 fis | dis e | cis dis}\\
{ \override NoteColumn #'force-hshift = #1
b'8. b16 a8. gis16 a2~ | a8. a16 g8. fis16 g2~ |
g8. g16 fis8. e16 fis2}>>
Thank you again for your kind attention to my request.
Mark