Hey guys - I'm trying to do my first chuckie and I'm having problems getting the temp down in my WSM. I started with Cowboy Brand lump charcoal. Filled the chamber to about 1/2 full and added two small chunks of white oak and two small chunks of hickory. Then I put a small layer of charcoal over that so the chamber was about 3/4 full. I started a full chimney of lump charcoal and when that was ready I poured it over the unlit coals. I waited about 10 minutes then added another chunk of hickory and oak. I put the center section on the smokers leaving the lid off and the intake vents at 100% open. Exhaust vent is fully open and remains fully open. When the white smoke stopped billowing I set up my temperature probe and put the cover on. Initial temp reading was 255* so I closed the intake vents to 10% open. 2 minutes later the smoker temp was 296* so I fully closed the intake vents. 10 minutes later the smoker temp was 280*. 10 minutes after that the temp was still at 280* Its been another 10 minutes and the temp has risen to 297* with the intake vents still fully closed. I'm using a Maverick temperature probe and the water pan is filled with water, beef broth, and sliced onions. I have no idea what's going on and I'm looking for a little help. If you guys need any more info just let me know. My chuckie is waiting to go on the smoker but I don't know if I should throw it on or not. Thanks in advance for your help.