I got the OBW book for Christmas, and read it through several times so that I would get the concept down. I decided to start with a fabric that I already had to make sure I knew what I was doing. But it had a 25 1/4" repeat. Odd. As I couldn't remember where or when I got this fabric, I decided to pre-wash it first (The author doesn't like doing that, but I felt it should be done). Wash, dry, starch, iron. Measure again. Now it has a 24" repeat. After cutting my 24" strips, I realize that the grain is off, like really bad! Now I've lost about 4" on each end of each strip, and I'm really upset. Has anyone had this problem? You are all so wise, please help!!