My problems with top & bottom margin are solved. Also the margin indent problem since my first FW update.
I looked at the driver settings and "Kobo eReader.conf"
I found two fixes!
I've added
disableQuickTurn=true in Reading
That makes the top line and bottom line work for selection if header off or footer off. For Kepubs or ePubs!
On Device (when Kobo H2O original connected) I made two changes:
1) On "Extended" I unchecked "Enable Kobo Extended Features" presuming that this is what is silently converting ePubs to keypubs on the fly.
2) On "Collections, covers & uploads" I unchecked "Modify CSS", as why would I do this? The CSS works fine on three non-Kobo ePub readers and two ePub apps on phone & tablet. Hovering the mouse suggests this uses some file I think I don't have.
Now the ePubs are ePubs on the Kobo AND they NOW look the same as on all my other ways of reading ePubs! Not only that but unchecking "remove blank paragraphs" "Indent 1.4em" and thus leaving indent at 16pt now works on Kobo (before it was always 1/2 the point size set unless changed to em equivalent.