Currently testing the Menu Plugin from this site:
http://www.mealldubh.org/index.php/software/fold_page_menus/

With the Journalized theme, the file I ended up editing was column-a.php rather than sidebar.php, seems to be working well, need to add a few more sub-menu items just to be sure.

Added a couple items under ICE Products, First and Second Edition Rolemaster, then added a couple of items under First Edition Rolemaster. The menu seems to be working great. NOTE: I didn’t update the coding in all the pages that I added to the menuing, so they don’t all display correctly, which has nothing to do with the menuing itself.