Table of contents style high page numbers overlapping

Question

I am using a custom table of contents style, but when I get to high page numbers (>100) the gap between the title and the page number gets very small. Does anyone know how to fix that? It seems like it is simply right aligned, whereas I would like it to be left aligned with a gap between text and title.

MWE: \documentclass[openany]{memoir}

\usepackage{lipsum}

\renewcommand{\cftpartfont}{\large}
\renewcommand{\cftpartleader}{}
\renewcommand{\cftpartafterpnum}{\cftparfillskip}
\cftsetindents{part}{0em}{0em}
\renewcommand{\partnumberline}[1]{}
\cftpagenumbersoff{part}

\renewcommand{\cftchapterfont}{\normalsize}
\renewcommand{\cftchapterpagefont}{\normalsize}
\renewcommand{\cftchapterpresnum}{\bfseries}
\renewcommand{\cftchapterleader}{}
\renewcommand{\cftchapterafterpnum}{\cftparfillskip}

\begin{document}

    \chapter*{Acknowledgements}
    \lipsum[1]

    \tableofcontents*

    \chapter{Introduction}
    \lipsum[1]

    \chapter{Background}
    \lipsum[1]

    \addtocounter{page}{100}    

    \chapter{Conclusion}
    \lipsum[1]

\end{document}

Answer 1

This seems to do it:

\renewcommand*{\cftchapterformatpnum}[1]{%
  \cftchapterformatpnumhook{#1}%
  {\quad\cftchapterpagefont #1}
}

As also mentioned in this answer: Making ToC page numbers flushleft, and not flush right