Damn, that looks so good. It's been a quite a while since ive been to Buffalo NY. Any time I was there I made sure I stopped and got Beef on a Weck somewhere.
The only issue I have with the OP, is this.... You did not have "aujus"... you had "jus". In French... au jus means with juice(sauce...dip ). So when you say... with au jus, you are saying with with juice.