I have been doing a few MMM NM runs lately for some extra {funguar} and found this handy. I think I picked this up from a BG post, but cannot recall…
A useful utility to help determine how to fit the runes you want for a maze: http://fluxrider.com/projects/ffxi-mmm/index.html
You can run it from the web page itself or, as I did, grab the jar file and run it from your desktop.