I think I understand what you are saying Cold Steel. In the Roman Catholic church the pope is technically fallible in regard to his opinions. He only become infallible when he pronounces something 'ex cathedra', which would be binding on all practicing catholics to accept. As a man he's fallible, as pope he is infallible.
But the GB doesn't have a system like the Catholics. There's no distinction between fundamental beliefs (such that you might find in a catechism or confession of faith) and just any old opinion the GB might happen to spout in the magazines. Theoretically, believing in vegetarian lions, 1914, and the ransom death of Jesus are all on the same doctrinal level even though, in terms of actual biblical support and relative importance, they obviously are not the same.