some bugs in my Ballade

[Matevz Jekovec]

Hello to all.
I want to publish my Ballade for flute and piano with a help of LilyPond (v2.2.4) engraver and I just cannot solve the following bugs in my score. I would appreciate some advice.
1. The extent between staves is too big. Any way I could fix that if I want to use dynamic/pedal markings seperated from the piano staff?
2. The mf in the beginning is too right (it should be right over the first note). But if I remove the themeMarkings context, it becomes aligned correctly.
3. I tried \modernCautionaries and \pianoCautionaries as mentioned in manual, but LilyPond doesn't recognize them (no escape sequence \pianoCautionaries found).
4. Any way I could name myself Matevž and not Matevz? (found in utf, latin2 or cp1250)

I attached the preview of the first line which contains mentioned bugs.


Thanks.
- Matevž Jekovec

After the flute and piano parts follows:
...

themeMarkings = \notes {
    s2. ^"Andante con moto" s2. s2. s2. s2. s2. s2. s2. s2. s2. s2.  s2. s2. s2. s2. s2. s2. s2. s2.
}

pianoPedal = \notes {
    s2. \sustainDown s2 s8 s8 \sustainUp
}

pianoDynamics = \notes {
    s8 \mf s8 s2 s2. s2. s2. s2. s2. s2. s2. s2. s2. s2. s2. s2. s2. s2. s2. s2. s2. s2. s2. s2.
}

\score {
    \simultaneous {
        \set Score.skipBars = ##t
        \set Score.melismaBusyProperties = #'(melismaBusy slurMelismaBusy tieMelismaBusy)
       
        \context Staff = flute
        <<
            \set Staff.instrument = "Flute "
            \flute
        >>

        \context Dynamics = themeMarkings \themeMarkings

        \context PianoStaff
         <<
            \context Staff = pianor
            <<
                \context Voice=pianorVoiceOne \pianorVoiceOne
                \context Voice=pianorVoiceTwo \pianorVoiceTwo
            >>

            \context Dynamics = dynamics \pianoDynamics

            \context Staff = pianol
            <<
                \context Voice=pianolVoiceOne \pianolVoiceOne
                \context Voice=pianolVoiceTwo \pianolVoiceTwo
            >>

            \context Dynamics = pianoPedal \pianoPedal
        >>
    }

    \paper {
        linewidth = 170.000 \mm
        textheight = 250.000 \mm

        \context {
            \type "Engraver_group_engraver"
            \name Dynamics
            \consists "Output_property_engraver"

            \consists "Piano_pedal_engraver"
            \consists "Script_engraver"
            \consists "Dynamic_engraver"
            \consists "Text_engraver"

            \override TextScript #'font-size = #2
            \override TextScript #'font-shape = #'italic

            \consists "Skip_event_swallow_translator"

            \consistsend "Axis_group_engraver"
        }
        \context {
            \PianoStaffContext
            \accepts Dynamics
        }

        \context { \RemoveEmptyStaffContext }
    }
}