I was able to get layout 28 to work. Confirmed it is injected in IORegexplorer (alc-layout-id = 0x1c). I did as you suggested and used "Device Properties" in config.plist as described in the guide above.
I notice my codec dump said "ALC269VC" and only layouts 13,14,18,28,29,30,33,35,40,66 in...