Hi Ed,
I am running two X1950XTX in Crossfire as well and wouldn't mind having a back up Master card since they are the hardest to replace. I'd be happy if you airmailed it to me and would gladly pay whatever is involved. You might need to fill out a simple customs form at the post office and you would have to declare a nominal value of say $10.00. As soon as you know what the postage is I can send you a US dollar draft.