cluster and stems

[Mehmet Okonsar]

how can we get a "slanted" stem on d' which joins the one on <c' cs'>:
I'm just looking for way to make a stright stem angled...
======================
%---------------------------------------------------------------------
%                      Notated Clusters
%      Date:
%      Time-stamp: <2007-12-12 22:55:56 mehmet>
%       -----
%---------------------------------------------------------------------
\version "2.10"
\include "english.ly"
\score
{
\relative c' <<
    {
        \once\override Stem #'extra-offset = #'(0.1 . 0)
        c!
    }
    \\
    {
    \once\override Accidental #'extra-offset = #'(-1.5 . 0)
    \once\override Stem #'transparent = ##t
    \once\override NoteColumn #'force-hshift = #0.85
    cs
    }
    \\
    \once\override Stem #'transparent = ##t
    \once\override NoteColumn #'force-hshift = #1.85
    d
    >>
}
===============================

-- 
Best Regards,
Mehmet Okonsar, pianist-composer
www.okonsar.com