Sending an SKS through the mail to a guy's FFL dealer in PA. Do I have to have the FFL's license # for my bound book or is their name and address good? When I have had C&R shipped to me the dealer's # was always on the invoice. Did a little checking up and this dealer has a rep for being a butthead. Told the guy I don't need their #. First time shipping out for me. Thanks in advance.