So I bought this OJ on Craigslist for cheap. Did the heat diffuser mod and the temps from one side to the other are a lot closer (within 20 degrees). Issue is, It is very hard to bring the temp up and takes a ton of charcoal. I even put a fan in the heat box and ended up burning the wood rack in half. Had a hell of a time maintaining 225-230. Do I need to do some modifications on the diffuser? Thoughts?