If it's not in volume II for the FCM or FOM they can't expect you to know. I've straight up told examiners to show me where the answer is in our manuals if I don't know it. If they can't then let's move on. Never failed a training event. You can't be expected to know information that is not provided to you. Just because the same people have been in the training department for 2 decades and know how many rivets are in the left wing doesn't mean you need to know it.