I think my problem was using different sewing machines, plus, I know that cutting with the rotery cutter made a difference. My eyes aren't that good, and some strips were not exact. I worked with the problem, and after some ripping, and re-sewing those, most things are lining up. May have to do a little trimming, but expected that since I used different fabrics , and cut in different grain lines. This is a scrappy pattern. I now know to stick with the same ruler, mark ruler with tape, and use the same machine. PS... I also know I don't want to sew 1 1/2 x3 1/2 strips anymore!!LOL