Hi again. Here is the result of the choke clean. Sadly no improvements. I even air cleaned the plastic connector that holds the lines to the dampers, thinking it could be what is clogged. nothing there either.
Friend, have you solved the issue? I have same issue before, first soak head with cleaning solution for couple of hours or over night, then try to syringe from bottom line which is from captop to pump, close one line and draw ink from another line( since your right cyan missing, so pull from right line), after that, run power clean, see whether you have right cyan comes out, if not do choke clean, then test print, if not do fill ink then test print. if still nothing change( which rarely happen), might need change head.