All right, Andy.  What are the facts?  I have always been told that you are 
limited to one trial work period per disability.  If you are blind, you are 
only allowed one trial work period for blindness.  Should you later have 
another disability you are allow another trial period for a secondary 
disability.  Instead of being your usual arrogant self, why not post the 
facts and explain them if I am wrong since you work for SSA.
Harvey