Well, it's only "car buffs" I wanted to take off the list, and not for any terrible reason. I like cars just fine, have loved every one I've ever owned, but am not much of an enthusiast. It's not triggering or anything (!) for me to see those posts, hence my saying it's not a big deal; I've just become accustomed to paring down the list to just those forums where I think I can potentially add to the conversation in a not unhelpful way.

There seem to be differences in both directions, some which can't be selected in edit options, and some listed in edit options which I don't see at all in the full list of actual forums.

Here's 2 screenshots of everything listed in Edit Options for me (temporarily deselected to make for easier reading):



continued:



Not sure what I might be doing wrong, but stranger things have happened! Cheers, and thanks for your kind counsel.