Thanks for your quick reply.
I've posted the question on Digi. Since you haven't had any issues, I'm sure the point is moot (and I won't waste any more time worrying about what's never going to happen
), but we'll see what they say.
I'll post back here if/when I get a response.
Just from a theoretical perspective, would a CD4050BC be suitable as a buffer on DOUT? I can't buy a 74AHC125N locally.