Well I have had a black country saddle for over 4 years and my horse seems to have a very dipped back just behind the shoulder/wither area, I was advised by current saddler that this was not a problem, (however I have always thought differently).
However in March this year I bought Bates Caprilli Close contact jump and wintec 500 dressage both with CAIR (inspired by my BE debut!) and had them both proffessionally fitted by the original saddler.
He is schooled & hacked 6 times a week and still no improvement - I was thinking of getting a different saddler to look at them and they are also due 6 a month check up...