We need to do some Jack Sprat-style partitioning and swapping, Ken.
The belly meat is indeed the firmest, no argument at all. I stopped including belly meat with fillets last year when nobody in my family would eat it. To me, shoulder meat is OK, but I prefer the thinner meat from the tail.
The last CC we ate almost sliced itself apart after my wife cooked it. I'm glad I got to enjoy it and you didn't have to suffer through it.