fixes

[David Bobroff]

Jan,

>\score{
>    \context Staff \notes \relative c'' {
>       a1 
>       <
>           \context Voice=one { \voiceOne c8 c   c c   c c }
>           \context Voice=two { \voiceTwo \repeat unfold 16 a16 }
>       >
>       b1
>    }
>    \paper{linewidth = -1.0}
>}

That was the magic bullet.  Thank you.  It worked for both the two-voice
fragment as well as the alternating up and down beamed groups (using 's').

I have yet to try the beam position fix.

Cheers,

David Bobroff