I think that part of my block situation is because I used two different machines. Both have a 1/4 inch foot but the 1/4" on one machine is not the same 1/4" as the other. Yup, I tested this theory out and it is true. A thread or two one way or the other will make a difference. Lesson learned. Little things mean so much when you are measuring. I also have discovered how much you can "fudge" just the tiniest, little bit and still make a quilt that looks marvelous.