J F Graham wrote:Folks' you don't have to be rocket scientists to figure this one out. Having been a mason contractor/ tile guy for many years; This one is easy. Line the thing as best you can, then use a wet saw to cut any angles where appropriate to tighten things up on the fire brick. Then after every thing is dry fire it up and walk away!!!
Heck, you can even rent the a wet saw from most Home Depots and make a bunch of corner bricks. And, . . sell an extra corner brick and the wet saw rental is paid for too.