I definately understand our problem. Even with a one quarter inch foot I can't sew a straight stictch. Let me tell you how I solved my problem. It might not work for anyone else, but if you are making a pattern, or a style all your own add a three eigths of an inch seam allowance and when you are finished and before your press your seams to a side cut it down to one quarter inch. You have to do it with every seam in the quilt to keep its correct measurements. I had to do that with my storm at sea quilt, and it works. Like I said it might not for you.