Mid deck removal on a Nacra 5.2 -- how to remove without hurting well

I read with great interest the thread on the 5.7 chainplate, and was ecstatic that Rob posted a pic of the inside of a 5.2 hull. So Rob and All, I know how to remove a foredeck, but how does one separate the mid deck from the daggerboard well? I will need to reuse the decks, so I know I have to move very slowly. Again, I just don't know how the top of the well fits into the deck, and just how one separates the two.

Thanks!

bn
Dallas, TX