Sometimes if I make the same pattern again, I think I might go in to the project with a no problem attitue. And that may cause me to not be as careful.
Also it seems the simpler the quilt, the more problems I have, maybe the same reason. But then I think that God is looking down and saying, "don't get so cocky sure of yourself, or I will have to teach you a lesson".
I usually put the problem up and when I go back to it later with lower expectations, there is no problem. Hope this makes sense.