If the mistake is that hard to see, can you add a stitch unobtrusively somewhere? Depending on what you're making, it may not make a difference in the final product. My grandmother allowed one mistake in any project. She treated almost like a prayer because only her Maker created perfection.Oh, dang! I hate it when I can't find the mistake in my knitting, but I know there is one because the stitch count/pattern is off.
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