Originally Posted by kovidgoyal
Open the azw3 in Kindle previewer or on the kindle fire. Do the fonts show up?
If they do tell amazon to stop pretending that the Touch has kf8 support.
If I convert the ePub via Kindlegen, the fonts display on the Kindle Touch just fine. But if I use Calibre, the Kindle Touch doesn't even know they exist. But, Kindle for PC will display the fonts no problem.
I might have access to a Kindle Fire sometime during the week and can test things out.