I had to take out several flubs while quilting my most recent one (Providence Lodge). Stitches that were jerky or wildly long or otherwise botched. A piece of the backing sewn on wrong. Thankfully not this same quilt) I didn't realize a scrap piece about 4x10 had gotten under my quilt while I was sewing and I sewed the piece to the back. I wondered "why does this feel so thick?" Hmmm...