I recently purchased a set of selenium inks in order to do PiezoDN.
The original Epson inks printed fine - a nozzle check indicated no problems.
I did a thorough cleaning, put the new ink set in - and am now finding that the Y, PB, and GO aren’t laying down any ink at all when I do a nozzle check. The place where they should be is blank. I get that the GO is going to be faint - but I don’t know what to make of Y and PB.