British weight groups

I was just rereading the weight group discussion in William Hovgaard's book General Design of Warships, and saw that one error that I have been making is including barbettes in the armament group, not the armor group. The rule is that turrets fall into the armament weight group but barbettes are in the armor weight group. That might account for my difficulties in accounting for the armor weight group in the Queen Elizabeth class. It would not affect the stability calculations, as I attempt to account for all the weights and their position.