I think I've done most of these too! I remember piecing rows of a quilt together and couldn't find 1 row! I looked and looked and couldn't find it. Luckily I had enough fabric to make 1 more row but knew I didn't like it as much as the original but what could I do? I put the top together with the new row still thinking I liked the orig better but I have to live with the adjustment. I turned around in my chair and guess what was hanging right behind me? The original row! I swear there are quilting gremlins that just like to mess with us!