I just re-read your message and saw you said you did change the station. Was that recently? Can you show your test print? Are you just missing a few nozzles or is it bad? Can you listen to the MS and see if you can hear air sucking? If so its not seating to the head and just sucking air. Sometimes the seal needs to be wet, kinda like a suction cup, to make a seal to the head... try some cleaning solution around the lip of the cap top and see if that helps.