Epson 4800 print head clog

nozzle test pattern
A question for the hive mind. Epson 4800, inkjet clog, cartridge #8, light light black (there should be a light gray rectangle to the right). Is there a printer repair technologist in CHO who makes house calls? The printer is bulky, has no wheels, weighs 110 pounds.
Or can you offer advice regarding restoring function when the printer’s various cleaning cycles do not suffice?

Author: WmX

I stumbled off the track to success in 1968, started chasing shadows that summer. Since then, In addition to farm-laborer and newspaper photographer my occupational incarnations include dishwasher, janitor, retail photo clerk, plumber, HVAC repairman, auto mechanic, CAT scan technologist, computer worker and politico (whatever it takes to buy a camera.) I am on the road to understanding black and white photography.