I think the legs are separate, 10% a piece, they are list in two different sections of the evaluations, as one being elevated from 0% to 10% and the other being listed as 10%, new rating. Ptsd being elevated from 10% to 30%. The back pay seems to equal 728 per month. They payed back to first filing date of Feb 2, 2006 I don't know what to think until I get my first check.. Paul sr