I have a favorite phrase when dealing with my quilting snafus......can I live with it? If the answer is no....I rip it out. If the answer is yes, I just leave it. It's funny the things that bother me. Cut off corners don't bother me or when my squared don't quite meet.....but once I had the borders on a quilt using a directional tulip fabric.....I was sandwiching the quilt when I noticed that one border was going the wrong way....that bothered me a lot....go figure.