I did my first smoke this past Monday (spare ribs) and they turned out amazing! My horizontal offset (obviously) tends to be hotter by the firebox, its only about a 50 degree difference. I've been reading a ton of different threads on here about adding a baffle and some tuning plates. I Bought a cookie sheet that fit the bottom of my smoker, so before I started cooking I started playing around with it using it as a baffle, angled from the opening of my firebox opening, and found that all it really did was keep the heat on the fire box side. My temps got off by like 100 degrees. I was not using tuning plates as well. What do you guys recommend material wise for a baffle and for tuning plates, I've read everything from 1/8 steel plates from the hardware store to disposable tin trays from the grocery store. Also when setting up the baffle and tuning plates how are they positioned in relationship to each other. I've also been reading something about a water pan, is this a necessary mod as well or should I focus on the tuning plates? thanks!