cross-voice ties and merging noteheads

[Orm Finnendahl]

Hi,

 in the example below (an excerpt of the left hand piano part of the
Schumann Song "Mondnacht") I'd like to resemble the rendering of
Clara Schumann's Edition in the Breitkopf&Härtel print.

%<----------------------------------------
\version "2.19.48"

\score {
  \new Staff \with { tieWaitForNote = ##t } {
    \clef "bass" \key e \major
    \time 3/8
    \relative f' {
      <<
        { e4. ~ <b e>4 ~ s8 \stemDown e,,4 b8 ~ b4. }
        \\
        { e''4.*2/3 b8 e,4 b8 ~ }
        \\
        { s4.  \tieUp e4. ~ <b e>4. ~  b4. }
      >>
    }}}
%<----------------------------------------

In the print,

1. the noteheads of the e of the first beat in measure 2 are merged

2. Both eigth note b on the third eigth of MM 1 and 2 are tied to the
   first beat of the next measure.

I managed to merge the first note in measure 1 by using a scaled
dottet quarter in the second voice, but this doesn't seem to work if
applied to simultaneous notes in voice 2 and 3.

Any ideas?

--
Orm