Does one treat an Epson Check Pattern?

Clog was detected during the autocheck on an Epson 4900 but no noticable quality changes in the print. The check pattern showed a few gaps in a VLM and C.

After multiple cleanings, power cleanings, and Windex Pad overnight multiple times, there are still detected clogs.

The check pattern still shows a few gaps in several colors now: VM, LK, Y, VLM, LC

The question is:  Does one treat the pattern or the leave it alone if I can't detect a problem with the prints?

As an aside, the print pattern was much worse following the first attempt at using Windex overnight to clean it:  All Print Head had Signifanct Gaps throughout the pattern. Anybody else notice this?

Is good, good enough?

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Michael Willens Photography
http://willensdo.zenfolio.com/
http://willensdo.zenfolio.com/img/s1/v22/p328992687-2.jpg