Eric,
Nobody can say whether you had a serious clog originally or not, but correct me if I am wrong, my understanding is that at least since the head dip in cleaning solution overnight, there is just no clog left in the head, right? Yet the head still has drop outs on the nozzle check, so there is something else, and that something else can either be premature delamination (premature because such a young printer should not be subject to delamination) or its nozzle connections are fried.
If you have delamination, I think that everybody will agree that it is extremely unlikely that it may have been caused by a clog, which means that you probably did not have any serious clog in the first place. The only problem with the delamination theory, is that one would think that delamination would manifest itself more randomly in the nozzles than the rather regular order of progression it is known by. And this is really why I believe more in the fried nozzle connection theory.
If you have nozzles connections fried, then who knows what caused it, but it is unlikely that it is nozzles clogged, because even as we post here, your head does not have any nozzle clogged, and yet it keeps loosing nozzles, just as mine does, and just as all the other heads I know do or have done. The fact that the number of damaged heads still seem to be overwhelmingly affected in the LLK channel makes me think of a chemical component of the ink that would promote a "corrosion" of the electronic/electrical contacts under specific circumstances, and if you admit that for the sake of the argument, then it seems to make sense to envision contamination just like rust propagates. But my understanding of this is no better than my expertise in what propulses the Star Trek space ship.
