Nozzle check was ok see post #1, but of course it's hard to see the yellow. I'll print a grey back ground on my wife's HP office jet, and let it dry and then print a new nozzle check to see the yellow better.
Have no Epson OEM inks on hand, but did try printing with different ink and carts (Cone Color Pro) see post #3, ... no difference.
Ink carts where not sitting around for a year, see post #1, they were out for maybe four weeks. When I stored them, had scotch tape the vent and ink exit, and placed, individually, into six snack zip lock bags.
So will do a nozzle check again on grey as explained above, and report back...
Question.. should just go ahead and just do a head cleaning of all six... with PizeoFlush.. anyway?
The carts with PizeoFlush were in there, so didn't think that would be needed and after it did its clean as usual, the nozzle check looked ok.. thought everything was fine.