Other question:
Does Librerator also install the font hack?
I might be dreaming.
Thought I had uninstalled the font hack a year and a half ago. After installing Librerator, for some reason I think the reading font on the regular Kindle mobi side changed. But maybe I am dreaming.
EDIT: found the ttf files for Caecilia, renamed and copied them to linkfonts/fonts, back to normal.