I would only take out the messed up ones. Find the end of the last stitch and put your needle down there. Then take a double stitch in place before starting and then fix the place that is wrong.At the end take two more double stitches in place. Now, you should be able to brush a little water on the holes that were left. They should close up on their own. But, no bigger than the place is, I wouldn't worry too much about them.