Cued notes with partCombine

[Garrett Fitzgerald]

I was trying to re-set the first clarinet part for Fucik's Florentiner March from a copied, enlarged marching band part. Using partCombine, it went fairly well, except for the cued piccolo solo. Can anyone clue me in on what I did wrong here? It works fine as I have it below, but if I move the comments down one line, things fall apart. Thanks for any assisstance rendered.

\version "2.12.2"

\addQuote "piccSolo" \relative c'' {
  \partial 8 r8
  r4 r8 a'16(\f g) | f8-. f16( e) d8-. d16( e) | f8-. d-. d4
}

clarinetOne = \relative c'' {
  \time 2/4
  \key f \major

  \partial 8 r8^"Tempo di Marcia" |
%%  \cueDuring #"piccSolo" #DOWN { R2*3 | } 
  R2*3 |
  \slurUp \appoggiatura { c'16[ d e] } d8-> r \slurUp \appoggiatura { a16[ bes] } c8-> r |
  \slurUp \appoggiatura { c,16[ d e] } f8-> r8 r4\fermata \slurNeutral |
}

clarinetTwo = \relative c'' {
  \time 2/4
  \key f \major

  \partial 8 r8^"Tempo di Marcia" |
%%  \cueDuring #"piccSolo" #DOWN { R2*3 | } 
  R2*3 |
  a'8\ff r a8 r |
  a,8 r8 r4\fermata 
}

\score {
  \new Staff  { 
    \clef treble
    \set Staff.printPartCombineTexts = ##f
    \partcombine 
    \clarinetOne
    \clarinetTwo
  }
  
  \layout { }
}