[GeoffR]

Originally Posted by crimson

Can anyone get "ePub fixed/adjustable top/bottom margins" to work? I want to make the top and bottom margins adjustable so I leave everything commented but all I got is this. The margins are fixed.

This patch worked on GeoffR's version so I'm not sure what I did wrong.

It is possible that the patch no longer works, I am still on firmware 4.8.1073 and while I have been updating that patch I haven't actually tested it on later versions.

From your screenshot I guess you have enabled the Reduce top/bottom page spacer patch? (in nickel.yaml) If so then you should also edit the last line of the ePub fixed/adjustable top/bottom margins patch to reflect the new size of the built-in margins:

Spoiler:

    # Replacement value: Set this to the size of the device's built-in top margin,
    # in pixels. This value is subtracted from the adjustable top/bottom margin
    # (if any) to compensate for any unremovable built-in top margin.
    # Suggested values:
    #   24  (Touch/Mini)
    #   32  (Glo/Aura/Aura2ed)
    #   44  (AuraHD/H2O/GloHD/ClaraHD)
    #   56  (AuraOne/Forma)
  - ReplaceInt: {Offset: 0x4A65D2, Find: 1, Replace: 44}

Edit: Two more things to check:
* Check that the book really is an ePub. The adjustable top/bottom margins stopped working for KePubs in firmware version 4.12.12111.
* Check that the book doesn't have an Adobe XPGT stylesheet: If it does then use the Modify Epub plugin in Calibre to remove it.