The SSDI process is complicated. You need to learn what is required from you and the Sticky "Don't start your claim unprepared" is a decent place to start. I won't repeat what I've written there...
Your doc should have a copy of the RFC he filled out. You should request personal copies of any important documentation from now on. Hand deliver copies to your local SS office, and have them date them in the future.
RSD patients symptoms vary widely--one of the reasons it is not an automatic qualifier for SSDI. It's your responsibility to document what symptoms you have and what your limitations are. You must not only prove that you can no longer perform your old job, but any job--and this includes one making anything above the SGA level (roughly $1000 per month).
Beyond the SS ruling on how RSD (which I would print and send to your rep
http://www.rsdinfo.com/social.htm ) I don't think it's realistic to think your rep will read up generically on RSD, regardless of what you supply. They are not medical professionals.
I found it very helpful to read the entire SS Blue Book
http://www.ssa.gov/disability/profes...ltListings.htm
Best of luck.