Hello. My Epson R3000 inkjet printer prints all the primary colors well. It will not mix colors (I think a red cartridge is not firing). Orange on the monitor is printed as yellow. Magenta becomes pale lilac and so forth.\r\n\r\nI was using the Ink Republic older cartridges (big ones) when the printer said it could not recognize the LLK cartridge. Ink Republic gave me new cartridges (small ones now). They all work fine but the colors do not mix. I switched back to the original Epson K3 cartridges that came with the machine and the problem is still the same...no color mixing. Great primary colors but washed out mixes. The heads and nozzle indicate that they are clean (no streaks or lines). And I did clean them four additional times to be sure. I know ink is flowing from all the cartridges. \r\n\r\nAny ideas? Thanks.