375 degrees? Wow, that's hot!!!
I've read posts about people having good success at 325 to 350
lid temp on a WSM, but never that high!. Be sure and let us know what you did, and how it turns out.
Just picked up a couple of Sam's Club's "funky flats" today. I say "funky" 'cause they look like they've been run through a planer. Three quarters of the point is gone, but the rest is still there. What are they thinking?