Because the system is so overloaded, and complicated to boot, I always think it is best to have a representative to take you through all the processes. They know what will be asked, and how to prepare for anything SS might ask of you. Also they know the system and how to keep you case moving along. doing this by yourself, has not proven effective for the most part from what I have read on NT. I had a rep. and it was an awful process anyway, but at least he kept at it until my resolution before a judge. It is worth it to have someone in your corner. This rep. I had worked for an attorney and did nothing but SS cases. He gets paid when you do, so there is no up front charges. He also helped me to keep my sanity when I was denied a few times. ginnie