I recently got a used 4900 with PK and MK channels and I'm planning on a 100% carbon ink set. I still have 9 cartridges left and was thinking of using 4 too.
Is there a rule as to how to position the inks in the printer, from darker to lighter?
I wanted to fill the Epson carts in the printer with clear base, while I wait for the refillable to come by mail, should take a few months. Is this viable?