thank you — that worked. But it looks like a few other things stopped working (such as \setlength{\jot}{10pt} , which I use in multi-line equations to have more spacing between the lines).
Instead, I can use \\[1em] at the line break to put that space in.
Just wanted to let you know!
thanks again.
p.s. — I really love what you have done here. I have a lot of math notes I’d like to publish and am thinking about an automated way to translate this to a KaTeX friendly format. Do you have a contact email or a preferred way to speak offline? ??