After pulling off the board I used to create a flat ring around the spinner, I sanded it flat with a long sanding block and added a little more filler to fill in the small depressions left by some wrinkles in the saran wrap. I also tightened up the gaps between the upper and lower cowl halves a bit. I’m such a perfectionist, that this part of the construction is going quite a bit slower than I’d hoped. All of this will be highly visible on the finished plane though, so it’s worth the extra time.