STOP!breathing marks are the FIRST thing that we enter when learning a new piece. If I think of all of the trumpeting desasters that I have seen, bad breathing was #1 on the list! Even if there is no rests, there is musical flow and that determines where the marks go. We are creatures of habit - and that applies to breathing too! If breathing is not practiced 100%, there will be issues ALWAYS. The most beautiful music is written in pencil. I hope that you get the message!