i9100 canon prints

rescue951

I hate starting a new topic but I need some input here. I have a Canon i9100 printer, and every once in awhile I'll print an image that will come out tinted blue, or to much red etc. I've done several nozzle checks and cleanings, adjusted the color and quality setting manually. I've used OEM inks from canon and several after market brands. Currently have after market ink in use. I always use canon pro papers.

However every once in awhile an image just comes out crappy....could it be a print head? and if so where can I get a new one?

Thanks Flustered Rob:bash :bash :bash :bash