I have a gelding that is super flat. I had him fitted at Martin and he needed a 10 inch gullet with a flat bar. I was going to have to special order and I honestly didnt like the way it fit him. So I went down and had him fitted by Lynn Mckenzie. They have a wide tree that fit him great! I just bought a Double J Lynn Mckenzie with the "wide tree" and its amazing!!!! I could not be happier. He is no longer cinchy and has plenty of room for his shoulder to move. Just make sure if you find one to either have the serial number checked by double j, or make sure it says wide fit on the billet holder. I had some people tell me theirs was a wide tree and then had it check and it wasnt. Hope this helps!!