[geek1011]

I have removed the 24 line spacing values patch for fw 4.10.11591 which GeoffR sent me. For those who are fine with the potential crashes on the Adobe epub reader, here it is:

Spoiler:

My 24 line spacing values:
  - Enabled: no
  - PatchGroup: Line spacing values alternatives
  - Description: |
      This patch changes the values on the line spacing adjustment slider,
      increasing the number of spacing options from 15 to 24, and allowing
      much narrower spacing values to be set.
    # save r5, initialise loop counter
  - ReplaceBytes: {Offset: 0x65A034, FindH: BC F5 84 EA 6D A3, ReplaceH: A9 46 00 25 ED 00}
    # loop to load 14 vals from new table
  - ReplaceBytes: {Offset: 0x65A03A, FindH: D3 E9 00 23 07 F1, ReplaceH: 20 46 04 A1 29 44}
  - ReplaceBytes: {Offset: 0x65A040, FindH: 80 01 20 46,       ReplaceH: BC F5 7E EA}
  - ReplaceBytes: {Offset: 0x65A044, FindH: 61 E9 1C 23 BC F5, ReplaceH: 08 35 70 2D F7 D1}
    # jump over new table
  - ReplaceBytes: {Offset: 0x65A04A, FindH: 7A EA 6A A3 D3 E9, ReplaceH: 7C E0 00 BF 00 BF}
    # new table: 14 8-aligned doubles
  - BaseAddress: 0x65A050
  - ReplaceBytes: {Offset: 0x00, FindH: 00 23 07 F1 80 01 20 46, ReplaceH: 00 00 00 00 00 00 F0 3F}
  - ReplaceBytes: {Offset: 0x08, FindH: 61 E9 1A 23 BC F5 70 EA, ReplaceH: 00 00 00 00 00 00 F0 3F}
  - ReplaceBytes: {Offset: 0x10, FindH: 67 A3 D3 E9 00 23 07 F1, ReplaceH: 00 00 00 00 00 00 F0 3F}
  - ReplaceBytes: {Offset: 0x18, FindH: 80 01 20 46 61 E9 18 23, ReplaceH: 00 00 00 00 00 00 F0 3F}
  - ReplaceBytes: {Offset: 0x20, FindH: BC F5 66 EA 43 F2 33 33, ReplaceH: 00 00 00 00 00 00 F0 3F}
  - ReplaceBytes: {Offset: 0x28, FindH: 4F F0 33 32 C3 F6 F3 73, ReplaceH: 00 00 00 00 00 00 F0 3F}
  - ReplaceBytes: {Offset: 0x30, FindH: 07 F1 80 01 20 46 61 E9, ReplaceH: 00 00 00 00 00 00 F0 3F}
  - ReplaceBytes: {Offset: 0x38, FindH: 16 23 BC F5 5A EA 5E A3, ReplaceH: 00 00 00 00 00 00 F0 3F}
  - ReplaceBytes: {Offset: 0x40, FindH: D3 E9 00 23 07 F1 80 01, ReplaceH: 00 00 00 00 00 00 F0 3F}
  - ReplaceBytes: {Offset: 0x48, FindH: 20 46 61 E9 14 23 BC F5, ReplaceH: 00 00 00 00 00 00 F0 3F}
  - ReplaceBytes: {Offset: 0x50, FindH: 50 EA 00 23 00 22 C3 F6, ReplaceH: 00 00 00 00 00 00 F0 3F}
  - ReplaceBytes: {Offset: 0x58, FindH: F8 73 07 F1 80 01 20 46, ReplaceH: 00 00 00 00 00 00 F0 3F}
  - ReplaceBytes: {Offset: 0x60, FindH: 61 E9 12 23 BC F5 44 EA, ReplaceH: 00 00 00 00 00 00 F0 3F}
  - ReplaceBytes: {Offset: 0x68, FindH: 55 A3 D3 E9 00 23 07 F1, ReplaceH: 00 00 00 00 00 00 F0 3F}
  - BaseAddress: 0
    # initialise loop counter
  - ReplaceBytes: {Offset: 0x65A144, FindH: 00 23 00 22, ReplaceH: 00 BF 00 25}
    # loop to load 10 vals from old table
  - ReplaceBytes: {Offset: 0x65A148, FindH: C4 F2 08 03 07 F1, ReplaceH: 20 46 29 A1 29 44}
  - ReplaceBytes: {Offset: 0x65A14E, FindH: 80 01 20 46, ReplaceH: BC F5 F8 E9}
  - ReplaceBytes: {Offset: 0x65A152, FindH: 61 E9 02 23 BC F5, ReplaceH: 08 35 50 2D F7 D1}
    # restore r5
  - ReplaceBytes: {Offset: 0x65A158, FindH: F4 E9, ReplaceH: 4D 46}
    # continue at 65A15A
    #
    # Replacement value: the number of initial line spacing values to exclude from
    # the line spacing slider; minimum 0, maximum 13. E.g. 9 will result in a
    # slider with 15 positions, starting from the 10th replace_float value below.
  - ReplaceInt: {Offset: 0x65A036, Find: 0, Replace: 0}
    # 24 replacement line spacing values: change these replace_float values to suit
    # your device and preferences:
  - BaseAddress: 0x65A050
  - ReplaceFloat: {Offset: 0x00, Find: 1.0, Replace: 0.75}
  - ReplaceFloat: {Offset: 0x08, Find: 1.0, Replace: 0.78}
  - ReplaceFloat: {Offset: 0x10, Find: 1.0, Replace: 0.8}
  - ReplaceFloat: {Offset: 0x18, Find: 1.0, Replace: 0.82}
  - ReplaceFloat: {Offset: 0x20, Find: 1.0, Replace: 0.84}
  - ReplaceFloat: {Offset: 0x28, Find: 1.0, Replace: 0.86}
  - ReplaceFloat: {Offset: 0x30, Find: 1.0, Replace: 0.88}
  - ReplaceFloat: {Offset: 0x38, Find: 1.0, Replace: 0.9}
  - ReplaceFloat: {Offset: 0x40, Find: 1.0, Replace: 0.92}
  - ReplaceFloat: {Offset: 0x48, Find: 1.0, Replace: 0.94}
  - ReplaceFloat: {Offset: 0x50, Find: 1.0, Replace: 0.96}
  - ReplaceFloat: {Offset: 0x58, Find: 1.0, Replace: 0.98}
  - ReplaceFloat: {Offset: 0x60, Find: 1.0, Replace: 1.0}
  - ReplaceFloat: {Offset: 0x68, Find: 1.0, Replace: 1.02}
  - BaseAddress: 0x65A1F0
  - ReplaceFloat: {Offset: 0x00, Find: 1.05, Replace: 1.05}
  - ReplaceFloat: {Offset: 0x08, Find: 1.07, Replace: 1.07}
  - ReplaceFloat: {Offset: 0x10, Find: 1.1,  Replace: 1.1}
  - ReplaceFloat: {Offset: 0x18, Find: 1.35, Replace: 1.15}
  - ReplaceFloat: {Offset: 0x20, Find: 1.7,  Replace: 1.2}
  - ReplaceFloat: {Offset: 0x28, Find: 1.8,  Replace: 1.25}
  - ReplaceFloat: {Offset: 0x30, Find: 2.2,  Replace: 1.3}
  - ReplaceFloat: {Offset: 0x38, Find: 2.4,  Replace: 1.35}
  - ReplaceFloat: {Offset: 0x40, Find: 2.6,  Replace: 1.4}
  - ReplaceFloat: {Offset: 0x48, Find: 2.8,  Replace: 1.5}
    # The first 14 replace_float values above should allow the line spacing to be
    # adjusted in increments of one pixel when using a medium sized font on a high
    # resolution device. If you use a smaller font size and/or a lower resolution
    # device you might find that increasing the slider one step at a time doesn't
    # always result in a line spacing increase at each step. In that case, you
    # might want to use replacement values that are not quite so close together.
    #
    # For example: (I use these values on my 758x1024 Glo)
    #
    #  0.7 0.725 0.75 0.775 0.8 0.825 0.85 0.875 0.9 0.925 0.95 0.975 1.0 1.025 ...
    #
    # or: (these might better suit the 600x800 Touch)
    #
    #  0.6 0.633 0.667 0.7 0.733 0.767 0.8 0.833 0.867 9.0 9.33 9.67 1.0 1.025 ...

Later today, I'm going to investigate the reports that the brightness slider one doesn't work, as I thought it did when I tested it. I think I'll be able to fix whatever the problem is.