Savina, I saw something this weekend about how the firebox is supposed to be situated in the egg. The crack/slit is supposed to be lined up with the bottom vent. I'm just as new at as you are but I feel like if I cooked ribs without a plate setter for four hours they would be way overdone. Then again, the temperature is what it is regardless if it's being deflected.
how are you liking the steel chimney top? I've always thought the cast iron daisy wheel was one of the coolest components of the bge, but I would consider switching it up if there's a real difference in performance.