I consulted my social worker about the appt I have with Soc Sec this Thurs.  She is a very kind and helpful person.  She is an odd combination of brisk and easygoing:  she will help me get down to something right away, but then we do it in a kind of lax, good-enough way.  She thinks I already have everything I need even though I'm missing a few documents here and there (i.e. they ask for receipts for nine months, I am missing two random months in there somewhere).  I am afraid I will get a very meticulous examiner who will point out any "t" I have not crossed.
Thanks again, @Jean4, for assuring me that I can go back and cross them later if I need to.