hi
files different from pdf are handled by FBReader
if FB is ok with some fonts then you should re-encode those txt not properly displayed
before that, the txt non properly displayed from FB are displayed well by the built in web browser?
you can do a quick check by renaming txt to html, then with a long tap on the file name it should ask whether to open with web browser or FB
In case also the web browser fails, then it is an encoding problem
otherway... i give up... any ideas
as for converting, I think that isn't matter of tool once we know the right encoding
could you provide a couple of txt sample ad a couple of ttf? for both one working and another not working
