I have a single line clog in light magenta in my 3800 that won't purge using standard nozzle check. Should I use more agressive means to clear it, or is a single clog no big deal? I'd rather not waste ink or soak with Windex if I don't have to. How many line clogs does it take before it noticeably degrades print quality? When I say a line clog I mean one out of 180 stepped lines is missing from the light magenta patch of the manual nozzle check printout.