# Reducing width of separation line in memoir Ruled page style

I'm writing a thesis template using the memoir class and I like the Ruled page style. According to the class manual:

This is like the ruled style except that the headers and footers extend into the fore-edge margin.

My question now is: how can I reduce the width of this line? I did not find the answer to this question neither in the manual nor by googling.

This is the (very) simplified page style I want to adopt:

\documentclass[11pt,a4paper]{memoir}
% Page configuration
\settrimmedsize{\stockheight}{\stockwidth}{*}

\settypeblocksize{7.75in}{32pc}{*}
\setulmargins{4cm}{*}{*}
\setlrmargins{1.1in}{*}{*}
\setmarginnotes{0pt}{0pt}{\onelineskip}
\checkandfixthelayout

\usepackage{lipsum}
\pagestyle{Ruled}
\usepackage{showframe}

\begin{document}
\lipsum[1-8]
\end{document}


Here is a solution

with

\makerunningwidth{Ruled}{\textwidth}


MWE

\documentclass[11pt,a4paper]{memoir}
% Page configuration
\settrimmedsize{\stockheight}{\stockwidth}{*}

\settypeblocksize{7.75in}{32pc}{*}
\setulmargins{4cm}{*}{*}
\setlrmargins{1.1in}{*}{*}
\setmarginnotes{0pt}{0pt}{\onelineskip}
\checkandfixthelayout

\makerunningwidth{Ruled}{\textwidth}