My horse is pretty easy to fit... she has a medium-width and fairly short back with average withers. Most regular QHB saddles will fit her. However, she has huge shoulders and has a problem with the front of the tree pressing into the top of her shoulder. Obviously this puts her on the forehand, restricts her movement, and makes her sore.
I'm getting a new reining saddle, which should give her some extra shoulder room, but is there anything else I can do if that's not enough? Is there some kind of pad that'll lift the tree up off her shoulders? Or will that cause the saddle to fit badly in other areas?