I notice that my armatus has teeth growing at the tip at the upper jaw which which fits betwwen the longest fangs of the lower jaw. My concern is that the small teeth located at the upper jaw is "rubbing" against the tip of the lower jaw and the teeth is creating an inwards groove. It's not very noticeable at the side but if you look at the armatus straight on, you can see the mark the teeth created. Is this normal?