Hello, I am using Epson 2880 on Mac. I using Inkjetmall cartridges and ink. The printer stay 1 mounth in storage.
When I reusing I have to cleaning the head with piezo flush and the color back to normal.
I was also cleaning under the cartridges carrier like you teaching.
My actual problem is, on each 8,5/11 print, I have, on the printing side of the paper, a spot or strike of black ink.
In the same direction of the printing direction, in the printing zone.
I was build a new 8,5/11 page with a 1 square inch black spot in the center. When I print no trace of ink spot or strike.
Is my printing head is dead and leak some drop of black ink?
Or I have to cleaning again the black head?