I have had my printer for 8 months and very pleased with it. A week ago all my color prints have a bright greenish hue to them. I have used up a lot ink going thru many, many cleaning cycles with no noticiable difference. I had this problem once before but a couple of deep cleaning cycles took care of it, but not now. I don't think more green is being added to the print, just that less of some other color is the problem. Any ideas???