I'm glad you found your solution.
Yes, ODF files are easily edited. In fact, I posted some tips on this post:
https://www.mobileread.com/forums/sho...2&postcount=33
In that code I get rid of margins (who needs them in such a small screen)
"table.hdr {width:100%; border:none;
margin-left:0pt; margin-right:0pt}"
and specify justified text
".plain {text-decoration:none;
text-align:justify; font-style:none; font-weight:none; font-size:x-small; font-family:serif; color:#000000}"
regards