Because nozzle problems can look like paper feed adjustment problems, always do a nozzle check before starting the paper feed adjustment.
If the nozzle check shows missing dots, do a cleaning cycle or a power cleaning. Repeat until the nozzle check shows no missing dots. For information on doing a nozzle check, cleaning cycle, and power cleaning, see the Epson documentation that came with your Matchprint Inkjet proofer.
Note: For the Epson 9800 printer, do not perform a power clean except as a last resort, because that uses a lot of ink. Repeat the nozzle check pattern at least five times before performing a power clean on the Epson 9800 printer.