Hello
@trip5896
Since you retired in 2008, a local adjustment is not possible in my opinion. You will have to file through one of the correction to military records paths. You might call the Army HRC for guidance on the matter.
The group that filed the Soto case might be able to help you. The best attorney I know with that type of expertise is
@Jason Perry the owner of this board.
Generally, DFAS uses the years and months of active duty equivalent shown on the first page of your disability retirement orders under, “DISABILITY RETIREMENT“ about 3/4 down on the page.
Good luck,
Ron