I simply tell them that Montana State Law required that I have THEIR full legal name and address to fill in the blanks on the Title before I can get it Notarized for transfer (that happens to be the absolute truth, by the way).
Strangely, none of the scammers have EVER given me the required information.
I also tell them that they must send the "cashiers check" to their shipping agent, then HE can cash it and bring me the CASH when he picks up the (whatever).
Again, strangely, they never reply.