I have noticed that, some things such as — in the original xhtml file when getting converted by Calibre does not get converted properly. For this reason I need to use
— this however gets converted by Calibre and works fine.
For you, try using
» for »
and
« for «
Edit; I have tested it and using the HTML Code of it works. For more HTML code go to
http://www.ascii.cl/htmlcodes.htm