I never in a million years would have scrolled through that huge list of fonts and found “Determined by Section Layout.” (To quote a dotcom executive I used to know, “It’s intuitive once you know how it works.” 
) Thank you so much!
Separators: Yeah, I wasn’t changing the Comment Section layout. I am now:
and it’s working just fine.
I’ve run into a known bug about PDF metadata, but other than that I’m all set.
Thanks again for all your help!