Oh, good. I have a box of V16s and was kinda wondering what they were for. I didn't like them for any mouthpiece that I happened to try them with. But I just got a Metalite...I have some experience to verify the refacer's claims. I have a Rico Royal Metalite M7, a mouthpiece with a high-baffled and big tip opening that I use occassionally when I am in loud or outdoor environments. When I use a reed that has a thin tip, but a thick vamp (like a Rico Reserve, Vandoren Classique), squeaks and loose control are very apparent. On the other hand, when I pair it with a reed with a thick tip and thin vamp (Vandoren V16, Alexander NY), the problem is quickly solved.