I actually did warp the metal. I had a spare lid, and put it on the WSM and it fits fine. This may be dumb, but when I did my hot burn, I started a mini fire on the top grate to burn some papers. Shouldn't a grill be able to withstand high heat even when owners do dumb things like I did????
Oh the reason I had a spare lid is because the paint chipped off the lid during the first year. Weber sent me a new lid no questions asked... That's why I ALWAYS but Weber!