Hi, at the other end of the world we don't get quite the access to try things, so I am interested in others experience of alternative necks. I have an early Yanagisawa 880 alto which I feel could do better and often wonder if I should bite the bullet and order another neck.It just feels like it could open up more. I also have a Selmer mk VII tenor which I'm happy with but as I said any experiences? Are they worth it? What can they do? Thanks.