I gave up on the diet. Marty eats Acana Lamb and Apple right now with added high quality canned meat. I am convinced it's not food at all. I am thinking enviromental or auto immune stuff. She has the same breakouts on her skin that you described. Marty's crusty mouth has healed up for now. I got a spray from the vet "Dermacool" that works well on the breakouts. It's a cooling anti-itch. Sad to admit but she's a pet store dog and I am very upset about the amount of unhealthy dogs that come from there.