Stillson didn't sell lightning rods, he sold bibles. The lightning rod salesman has a different name and he's in the book only a short time; a scene at a bar.From what I can rember the lighting rod sales person was Greg Stillson, he was selling lighting rods that where defective and he knew it.
Never seen that but the Dead Zone is one of Walken's best and personally, I think he should have been in the Dark Tower instead of that guy who does car commercials. Yeah, Matthew is a good actor but Walken is better.. imo.."You c'n HANG ya COAT HEAH!" (Christopher Walk In Closet...from Modern Family...phonetic impersonation all mine).