hi johnson4, I write from Google translate, from Italy. I arrived here because in my part there is no forum so rich in experience and skills, I need help .. I bought a used Epson r3000 but with a well-maintained head, I'm waiting for the Dtf inks to arrive, and taken by curiosity I wanted to fill the only set of resettable cartridges with 50% demineralized water, 40% isopropyl alcohol and 10% glass cleaning liquid. I cleaned the channels thoroughly, even though the black in print was staining the sheet and I have no idea why. my question is, will I be able to use the same cartridges filled with only 10ml of liquid to print or do I have to buy more? is there a procedure to empty them completely? I am attaching a short video of the cleaning process