I was very happy with PiezoFlush.
Now I have a problem.
As I did not intend to print for long period, beginning June 2015, I filled my Epson 4900 printer with Piezoflush.
After this filling nozzle check was OK
Now, end of December 2015, I made a nozzle check. It was not good.
I tried power cleaning, new filling with with Piezoflush.
Result even worse.
When looking through the ink cartridges, filled with PiezoFlush, some are dark, the other not.
I'm really in problem.
Is my PiezoFlush obsolete? The PiezoFlush bottle that I still have is marked "Lot 130802 Exp.008/15". The cartridges were filled with the two other bottles that I did order.
Could it be a problem with the printer?
What should I do?
I attach copy of Nozzle check patterns in June and December 2015.
Also a scan of two PiezoFlush cartriges, on dark the other not.