I recently purchased a 5 year old Tennessee Walker. He has a very wide back and low withers. I recently noticed that my gaited saddle was pinching his withers which is clearly causing him discomfort. The hair in those areas has turned gray. I decided to try a full QH bar saddle on him. Even it pinches and rubs on his withers. I have considered the following other options: A Haflinger tree saddle, a treeless saddle (likely a Bob Marshall), or an Arab tree saddle. I am told that the Arab tree has front bars with a flatter angle than even the Full QH saddle would have, so they might not be as likely to pinch his withers. Any suggestions as to which direction I should go with this problem? Thanks!