How to get the veelo chapter style of the memoir class to pick up trimmed paper sizes?

\documentclass[showtrims]{memoir}

  \usepackage{graphicx}

  \stockaiv

  \settrimmedsize{242mm}{165mm}{*}
  \settrims{20mm}{20mm}
  \settypeblocksize{*}{25pc}{1.618}
  \setlrmargins{*}{*}{1.5}
  \setulmarginsandblock{3pc}{3pc}{*}
  \setcolsepandrule{1pc}{0pt}

  \chapterstyle{veelo}
  \checkandfixthelayout

  \trimFrame

  \begin{document}
    \chapter{My first chapter}
    Notice how the veelo setting has not picked up the right paper size.
\end{document}