I started the final two circles at least two months ago. Both were finished, but they weren't sitting flat so I had to unpick. The not sitting flat has been an ongoing issue with this quilt. I have my theories including by the time 1mm is added to each side of each pattern piece with the fabric folding over the freezer paper, the pieces no longer fit together as you would expect.
I am looking forward to getting the centre section of this quilt finished.