This will give you an idea of what you are up against with the VA if you go toe to toe on an §11151 claim. This Vet did not prevail and would probably have been better served with a real lawyer. The claims are a lot different than a standard claim.
http://www.va.gov/vetapp11/Files5/1145745.txt
That dang one year thing bit him.
This reads like a win at the BVA level to me, vice the malpractice slant.