Did as directed, and Naaku and Malunay both function perfectlyBoth should be fixed in the next version. You can paste the file below in the \map directory (overwrite the existing one) in your Tianxia folder in the meantime if you wish (it'll change the checksum, but that's unavoidable).
...but then I scrolled over and everything from the Bay of Bengal to Atlantic was offset enough to push most the world into the seas Reverted, but might try it again later, in case I messed something up.
Another note, Ryukyu's flavour text says they are able to raid overseas by boat, but are disallowed from raiding.