I have the perfect method, as the seam is coming up to the needle, I start to say some words I wouldn't around my mom, shove the piece under the foot and WAH La I have a perfect match, (if I take my glasses off and look straight down at the intersection) I have always been under the impression that being a little off is artistic license on interpreting the pattern. Give it a try especially after a glass of good for your heart red wine.