this is a long shot but I thought I would try:
My older Kindle (6", b&w, no backlight) has sustained some damage to the bottom (1/3" or less) of the screen - not visibly cracked just unresponsive. Now it is still almost usable, however the bottom line or half line of every page (or every other page) gets cut off and I can't read it. Is there any way, through either editing the MOBI file, or perhaps the Kindle settings ("jailbreaking??"), that I can force a page break or make it display one line less on every page?
Any suggestions appreciated.