Change TupletBracket slope?

[David Stephen Grant]

Hello list,

In the following example the tuplet bracket follows the notes nicely, but the first rest forces it way out of position. I would like to be able to adjust the Y position of the right side to flatten the bracket, but can't work out how to override the defaults.

Thanks!

David

\version "2.19.8"
{
  \clef "bass"
  <<
    {
      <a, a>4
    }
    \\
    {
      \tuplet 6/4 { r16 g e d b, a, }
    }
  >>
}