[GeoffR]

Here is the custom line spacing patch for firmware 3.0.0 (0cbc3626b3) on Touch/Glo/AuraHD. I have tested it a little bit on my Glo, it doesn't seem to cause any problems so far (actually it seems to work better than the 2.8.1 patch, which caused problems when reading kepubs):

Spoiler:

<Patch>
# Firmware 3.0.0 (0cbc3626b3) on Touch N905C / Glo / Aura HD
patch_name = `My line spacing values` 
patch_enable = `yes`
# Bypass code-injected values
replace_bytes = 817CEE, 57 F5 16 EE, 00 46 00 46
replace_bytes = 817D3C, 57 F5 EE ED, 00 46 00 46
replace_bytes = 817D62, 57 F5 DC ED, 00 46 00 46
replace_bytes = 817D98, 57 F5 C0 ED, 00 46 00 46
replace_bytes = 817DF4, 57 F5 92 ED, 00 46 00 46
# Values for replace
replace_float = 817E38, 1.05, 0.8
replace_float = 817E40, 1.07, 0.85
replace_float = 817E48, 1.1,  0.9
replace_float = 817E50, 1.35, 0.95
replace_float = 817E58, 1.7,  1.0
replace_float = 817E60, 1.8,  1.05
replace_float = 817E68, 2.2,  1.1
replace_float = 817E70, 2.4,  1.2
replace_float = 817E78, 2.6,  1.3
replace_float = 817E80, 2.8,  1.5
</Patch>