I've never built a smoker, but I've torched a lot of metal over the years.
So yea, I'd heat and bend. You might need some blocks and ratcheting strap to "encourage" things along though.
Neat build though. One of these days I'd love to start a thread like this.
Meat eater. Woodworker. PS3 Gamer. Home Theater Guy. Beer Drinker.
WSM 22.5 and random cooking stuff used to help form my shapely manly figure.