After drilling and clecoing the top of the flap, I proceeded to turn the flap over to complete the bottom. My concern was that I wanted to make sure the flap structure remained flat, but the clecoes in the top held it off the table. Blocking up the tip of the back ribs was easy with a thick straightedge underneath and held with a board and shot bags on top. I looked around the shop for appropriately sized boards to place under the nose skin but found none. It was late at night and way too late to fire up the planer to make what I needed.
I looked around for anything that would work.
I looked some more.
I looked in desperation.
I looked in my soul... and finally found what I had been so desperately searching for.....