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The first two pictures show the panel clecoed in place.
      These two pictures show a solution to a problem mounting the nut plates with flush rivets.  To use the flush rivets I had to dimple the mounting holes, but, I could not get the nail up through the hole with the bottom die.  I simple drilled a backing hole larger enough to pass the nail through, insert the die and then pull the nail up into position. It worked great and added a few lightening holes!