Hi,
Your instructions were great for the jailbreak and font hack!
I was very nervous about trying this, but it worked the first time. To confirm how to change to my own fonts. If I want to change only the font used by the reader do I just rename mine to the serif_*.ttf series like in the fontsfile/fonts folder? If I understood the post, you have to use the same file names as the ones in the linkfont/fonts folder regardless of the font you are replacing it with.
I'd like to try the calibri set.
Thanks