I am using briquette, I started using minion, filled ring all the way, put lit on top, filled water pan, got it up to 300 then put my meat in ...was going good for the first two hours, bottom vents were at 25%, then it really started racing..i have gotten it back down now..should i have started with a little less lit, i started with about 20 lit coals. Thanks guys ...this is my fist smoke in my WSM.