So, all you experienced binders, do you machine sew the folded side down, or hand whip? I do use my walking foot to sew the binding on, which helps immensely. I'm going to try starching my back to see if that helps with the puckering. At this point, most of my quilts get hand finished as I like that look so much better than machine stitching. Sure takes a long time to go around a queen-sized quilt!