Mark, and funfoto,
I called Epson, and they decided I would need a service call, and planned to deliver the parts overnight, with a service rep installing them in the morning. A few hours late I received a call back, asking that I run (another) a power clean from the admin menu. Which I did, it took 37 minutes, and when was finished it reported I had a clogged nozzle. I then ran a test print which was perfect, and the message disappeared. I turned off the printer, and restarted with no messages or issues appearing.
I called back Epson to report the results, and they suggested the problem may be resolved in a future firmware update.
Bob