Hi Mel,
That's always been a problem for me. I check under a strong light with a small but strong magnifying glass.
However, Yellow never seems too be a problem so I don't often do a detailed check.
Ditto on what Terry said. Same for me.
I have tried printing the yellow only unclog problem and I think it looks ok, but I'm not sure whether there is anything missing or not. Any suggestions would be appreciated.
At least that explains why you miss the bowl so often.
fred