There are some good raw feeding groups in yahoo groups. Some are local, some are national. One of them I belonged to was called "K9Nutrition" it was really good for all kinds of raw feeding.
A good place to get supplements and stuff for specific ailments/allergies is
http://b-naturals.com/ . It is owned by Lew Olsen (a female) who knows a lot about canine nutrition. She also is available to answer questions. She is on the K9Nutrition group and also you can email her through her website. My westie had lots of allergies and yeast. She has stuff to help it.
Good luck! Let us know what you end up doing and what you find out.