Covers
'Set book cover from e-book file' did the trick. Calibre has so many features it's hard to know about many of them. Even the ones hiding in plain sight. Didn't need to alter anything in edit ebook to get the cover. I will do a modify epub to push cover and metadata changes.
UPDATE: Using set book cover does result in a duplicate cover image. A new file called cover.jpg is added to the epub.
UPDATE 2: Duplicate cover only happens if I don't edit the book file and flag the cover page and cover images as 'cover'.
Fonts
I Ran a check on the source EPUB in edit book. Got the error:
Quote:
WARNING: The file OEBPS/fonts/CharisSILB.ttf has a MIME type that does not match its extension
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OPF has media-type for font set to "application/x-font-ttf". I manually changed the OPF to the correct media-type and fonts were included. Maybe as a convenience, add that type to the font output list. IDK if that is an official type or not.
I'm splitting books like magic now. Thanks again.