I came across these links and thought they might be of some interest to you. I'm guessing the first and second link are more applicable, but that's is just a guess, so I included both. The first gives some suggestions about additional documentation that might be of some help at your ALJ hearing.
http://www.disabilitysecrets.com/res...g-benefits.htm
http://www.disabilitysecrets.com/page9-16.html
http://www.disabilitysecrets.com/page11-10.html