Bill is at Team Ford.
http://www.teamfordlv.com/1.1 degrees negative camber should't be too much. I also would like to see it closer to .5 though if you are chasing a tire wear problem. Mine was sent from the factory close to the upper limit (about 1.7 if I remember correctly) and it most certainly contributed to a wear problem. I installed the camber kits and adjusted camber close to 0 and my tire wear problems are GONE.
