Seasoning a Masterbuilt XL - Having issue with Temperature 2 high.

I am in the process of seasoning my XL right now. And have a few questions.

First the mods I have done.

1. 12 inch Cast Iron skillet sitting directly on the stock chip pan. I did not mod the stock chip pan at all

2. Waterpan is restraunt style steam table pan. Has about 1 to 1 1/2 inches of clearance on each side.

3. Mounted it on a Harbor freight furniture mover. with a couple of 2 x 4's

In the photos you can see my ivation wireless thermometer and the sensor mounted on the 2nd shelf from the top.

I place 4 decent size apple chunks in the cast iron skillet. 

I live in Biloxi, MS. So at sea level, and damn hot!!! 

I am seasoning the smoker, and I read not to use water in the pan while seasoning

Questions/Issues

1. Big Variance between my ivation and the door thermometer, in the photo you can see my ivation is reading 246 and the door is over 300.

2. Can't keep temp low enough. I have the propane knob as low as it will go, and my ivation is hovering around 290-300  Door is reading 350. And its raining right on it pretty hard right now (didn't seem to effect it one way or the other), but just saying, in another month I will be dealing with much higher ambient temperatures than today.

So question is would meat in the smoker and water in the pan help with the temp? I know it will take longer to get hot, but should I be having trouble keeping it under 300 empty?

The good news is even at this temp my chunks have not ignited. They are definitely smoking up quicker than they should but at least not burning, and I am getting good blue smoke, although probably a lot more than I should. So I think once the temp is under control I will be in good shape.

Another question. Anyone got a cool holder or something for the transmitter? My leads are not long enough to feed through the back vent and reach over to side handle so that I could hang it off the side. What I am doing right now is I have it setting on a silicon pot holder.

Hoping to line of the temp problem, and do a test smoke tomorrow with some chicken and turkeys. Then I have a full brisket, 4 racks of St. louis style ribs, 2 salmon fillets, 6 turkey legs, and about 8 pounds of tuna steaks ready for a full smoke. 

And yes before you do the math, I know that won't all fit, but I will be able to do 2 "shifts" on 3 of the racks while that briskets spends the day soaking up heat and smoke.

Update: 1 hour after I started it my chunks have ashed over and are not longer producing any smoke at all. So temp is definitely to high as is.