The Kodak 805 works!
I just received the replacement Kodak 805 in the mail. I plugged it in, added its USB ID to the Kodak 1400 backend, and kicked off a test print.
It worked perfectly... and there was a distinct lack of smoke escaping!
In other news, I've fixed the last of the bugs in the Shinko/Sinfonia CHC-S2145 backend, resynced everything with Gutenprint, and now it's time to start unifying the various backends.
This ought to be fun. And by fun, I mean fun. Yeah, I need a life..