Jaba - there is nothing wrong with what you did.
The total measurement of the center is 29 1/2 x 29 1/2 which is not divisible by three so I have to do some "fudging" with one section of my border to make it balanced visually.
My fault for not stating when we started this that all center measurements should be divisible by three. This makes it easier to make pieced borders - I now know.