Cover now adjusts based upon papersize. Looks good.

main-dissertation.tex

@@ -1,6 +1,6 @@
 %%%% This template is for Dissertations (PhD)
 %%%% Make sure you have lualatex installed!!! (package texlive-luaatex)
-\documentclass[showtrims, b5paper]{rubook}
+\documentclass[showtrims,b5paper]{rubook}
 %% a4paper or b5paper:  paper stock size.
 %%     If A4, show cut lines for the printer.  If b5, no cut lines.
 \usepackage{rudissertation}%% RU PhD Dissertation formatting
@@ -72,7 +72,9 @@
 
 \begin{document}
 \printedcover{\thetitle}{ISSN XXXX-XXXX}%Cover title and ISSN number
+\printedcover{\thetitle}{ISSN XXXX-XXXX}%Cover title and ISSN number
 \maketitle{}
+
 \disableindents{}%frontmatter material mostly doesn't need indents
 \copyrightpage{\thetitle}{0000-0000-0000-0000}{100}{ISBN 978-XXXX-XXXX-X-X (print version)\\
 ISBN 978-XXXX-XXXX-X-X (electronic version)}{Printing: RU Printing osf.}{Printed on 900g Cardboard paper}