Thanks for the update!Update: I'm still working with RT to resolve this. I've visited multiple forums and it's looking like the warping is isolated to the larger griddle (Bull / Stampede) as the round and smaller haven't had the same feedback. A replacement has been shipped, but I'm under the impression it will perform in a similar fashion. The sub 350 deg. temps have minimal or no warping but once it's cranked up, all bets are off. At least in my experience.
I'll update again once the replacement arrives and I've completed a couple cooks.