The baffle is simply a sheet of 10 gauge steel. I place it on the charcoal grate, right over the reverse flow opening. It simply diffuses the heat. Don't have a pic of the baffle, but here's one where I placed a GrillGrate over the reverse flow opening, just to see if it made a difference, before having Travis cut and send me a solid steel baffle. Works pretty good.
Many would not look at this as a defect in engineering. There are times (chicken) when it can be very beneficial to have one side of the pit a bit warmer. And as mentioned, when cooking at lower temps (225°ish), the heat is pretty darn even.
With the baffle I had cut, I left a 1" opening at the front/rear of the pit, allowing the heat to gently come up on the reverse flow opening side.
The reverse flow opening is directly under the GrillGrate you see in the pics.
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