I can't pin down what you are trying to say. No wonder I usually stick to the topic of Mary. It is the topic that is most clear to me in defining RC doctrinal problems.
well since i'm not an RC I can't help you much there.
the point is the only infailable doctrines come from the ecumenical councils where the whole church was present not some rogue 'prophet' band of 'prophets' or band of rogue 'bishops'.