I posted your new nozzle check below (which looks worse than before), with red lines at the top and bottom of where I see problems in each channel. From left to right, the color positions are: LLK, LM, LC, LK, K, C, M + Y.
In the upper section marked of the LC channel, I see some darker ink printing between the red lines I marked. In the LK channel, there are three individual nozzles that are printing darker ink. The K channel is bad in the upper-mid section with missing and mis-firing nozzles, the C, M + Y channels are showing some missing and mis-firing nozzles as well, but also the area marked is a bit lighter on those positions. I also posted some close ups for you to see the detail I'm talking about.
(enlarged section of K and C channels below)
(enlarged section of C, M + Y channels below)
Have you had a print head strike on the edge or corner of paper or film, or other print head jam? Have you been experiencing any ink drips on paper while printing? How does the status monitor ink level reading compare to the physical cartridge ink levels? Do you have the fill hole plug IN, and air vent plug OUT on all carts? Do you have other cartridges- either Epson or refillable to try?
Yes, having flush come out a channel when you inject into a neighboring channel means the internal seal between channels is damaged, causing cross-contamination between channels, therefore the head is junk.
Please let me know, thanks~ Dana