When I got this printer back in late December I experienced what seems to be the same "clogging" issues that several others on this forum experienced. I was busy and delayed getting Epson to come out to look at it, and the problem vanished. I have auto clog detection turned off (though it seems to work perfectly), and simply printed a nozzle check before each use of the printer so I would know what was happening. I did not experience a single clog, or do a single cleaning cycle for more than 2 months. During those two months the printer sat unused and powered off for two 2 week periods. A couple days ago, even though the printer is used daily, I did the usual nozzle check and found about 90% of the cyan nozzles missing from the check pattern. No other colors had any clogged nozzles, and not a single cyan nozzle has ever clogged on this printer before, even when I was having the initial problems. A "color pair" cleaning cycle fixed this, but the next day a couple cyan nozzles showed missing again. A cleaning cycle fixed that too, and it hasn't recurred.
Given that I know the printer can go months without a single clogged nozzle, and the fact that no cyan nozzle has EVER had a clog, I'm doubting more and more that these are clogs at all. It just doesn't make sense that there are fits of clogging, especially with 90% of all nozzles for just one color missing, with months of clog free performance in between. I'm thinking there is air entrapped somehow, sometimes, perhaps caused by temperature changes, or something. That's only a wild guess, but it makes a little sense.
I don't consider this anything more than a nuisance since a couple cleaning cycles in 2 months isn't exactly bad performance. But I did wonder if others are experiencing the same thing. Sometime later in the year (but before the warranty is gone) when things are less busy I may have Epson check it out. If so I'll post the results here.