Hi all, I'm experiencing a problem with only the yellow cartridge. My yellows are printing very faded, and perhaps a little pink (unless it's my eyes decieving me) but definitely very light. I ran a page of solid yellow through which printing in varying bands of intensity, please see pics. I've ran a good few print head cleans but the issue remains. Nozzle check pattern shows faded white band although it is hard to see. Any ideas?