All the other colors print fine, but the CYAN clog won't budge. Previously I performed an "initial fill cycle" with Piezo flush in the cyan and magenta channels. It cleared enough to print the cyan rows pink in the nozzle check, but but then clogged up again the following day. Afterwards I did 4-5 #3 cleanings through the control panel. Hasn't changed much. Assuming the attachment shows, you can see that a section of the head - about 15% isn't printing. Should I suspect bad dampers or something other than a damaged head?