Since the cats have been seperated you need to set widths to your columns via forumdisplay_forumbit_level1_nopost, forumdisplay_forumbit_level1_post, forumdisplay_forumbit_level2_nopost and forumdisplay_forumbit_level2_post.
Set the forum/description width to 80%, Moderator column to 20%. Put the posts/topics on nowrap and it should align.
I may release a mod on this since it could be hard to explain for many people.