Same here, but both of my decks are warped, sufficiently to negatively affect play.
I'd like to know how to get this fixed too.
Or should I just contact AEG for replacements?
In my experience, AEG is very good about replacing components if they are warped straight out of the box.
Otherwise, I ended up getting another set when the Texas weather decided to play Mystic Vale as well. Lets just say he's not the type of guy you invite to game night twice.