Not sure how 'serious' this is yet, but after noticing an odd cast to parts of a print I discovered my entire cyan was not printing (which made sections seem overly magenta, a bubble of air?). After several cleaning cycles I then also lost violet (all nozzles). Now I have a small subset of each of those colors back. I haven't done a power clean or whatever it's called yet. I'm giving it some time, I got a couple more nozzles back this morning that I didn't the night before, but am a long way from having a printer that'll print with quality again. I guess I'll bite the bullet and do a power clean soon, but am open to suggestions on getting things unclogged again with minimal ink loss.