Wowser, such good suggestions. Some of the measurements of the offending border are a little off. That neutral square in the border is supposed to be one inch, and some are not. I must have made that section first when I was not measuring. I thought I had reworked everything. But I found a section in the middle that was a little off. I don't know who said this...maybe bear, all these off's add up. When you make the strips it is easy to control the between length, but then when you sew the strips together there is another adjustment.
I have not measured the center.