How do I set up Dropbox API for use on a multiple server environment/ load balancing?

Gregory, my code works on a single server (it's alive in production now).

where the code sets/reads the session data, I just replaced it with cookies. Which will have no baring on handling the authorization request. The exact error is the generic 

"/dropbox-auth-finish: CSRF mismatch: expect ##########, got ########". This is because the request is leaving one server and returning on another. My logs show the request leave and return on different servers. I see no documentation on handling this work flow.

Have you built dropbox to work with multi-servers before?