Moving a note to the right

[Roy Goodman]

% I thought this would be simple but I was wrong.  This file gives the
% following warning when compiled:
% test.ly:30:14: warning: ignoring too many clashing note columns
%           {e1 
%              cs}
% I thought that I would move the note which appears right after the 
% \override comments in the file, but neither \override statement did 
% what I expected.  (I tried NoteHead as well, but that just moved the head.)
% Any help or enlightenment would be appreciated.
% Thanks, Roy (rlgoodman at acm dot org)

\include "english.ly"

\context PianoStaff <<
  \context Staff = upper {
        \set Staff.extraNatural = ##f
  \time 2/2 \clef treble \key bf \major 
        << {cs''8 c'' cs'' e'8~ e'4. cs''8 b' as' b' cs'~ cs'2} \\
          {cs'1 \change Staff=lower gs1} >>
  }

  \context Staff = lower {
        \set Staff.extraNatural = ##f
  \time 2/2 \clef bass \key bf \major 
        << {a2 b4 a
%               \once \override Voice.NoteColumn #'X-offset = #3
%                \once \override NoteColumn #'X-offset = #3 
                fs2
                fs4 es} \\
          {e1 cs} >>
  }  >>