Ok, so I did some testing yesterday. I used one Polder probe thermometer, one Redi check wireless probe thermometer, and a grill surface thermometer. I set the smoker temp to 230 and let it heat for an hour During that first hour, the temp that the smoker was reading was wildly off from what the probes were reading, and I'm talking about a 30+ degree difference. Once things were heated up though, the smoker thermostat read 231 and by probes were reading about 223. Now at least I know that if I set the temp about 5 or 10 degrees higher, I should get the temp desired. It looks like the chip tray is the culprit after all.
I also used the opportunity to test out my AMNS. I loaded up rows 1, 2, 4, and 5 and lit both sides. What I got was 2 or 3 hours of perfect smoke! There was no row jumping, and everything went flawlessly. Who the hell needs chips when you've got that bad boy? Great purchase!