Hello guys. I know this has been discussed before but looking for a tune up.... I have a wrangler, have done about 4 cooks and like it. My issue is this; the temps run about 30-50 higher on the EXHAUST side for about an hour. I'm using two calibrated digital thermos that are held off the grate about 1/2 inch. After about an hour the temps even out to about 15 degrees but every time I add fuel I get the huge spike again. I have 3 tuning plates. I put two of them all the way on the exhaust end and one about an inch or two split towards the fire box. On my last cook I even put a baking pan of water on top of the plates on the exhaust end. I have sealed the CB and FB. I'm using a charcoal basket using the design I've seen on other post. It gives me 2 1/2 to 3 hours pretty steady. Any ideas or fixes I may have missed. In spite of the temps I've cooked great butts, ribs and a brisket. Thanks, Smoke On!