I am currently smoking some ribs right now, 2 full slabs, and started it about 3:00pm. I am using Hickory Charcoal and Hickory logs. It took awhile to get the temp of the smoker to about 220, but finally got it. It is about 1 1/2 hour into it. However about 30 minutes ago the temp dropped to about 160. So I put on another Hickory Log with a few chunks of Hickory Charcoal. However the temp is still only around 163 and doesn't seem to want to climb. I thought about putting on another Hickory Log along with some more Hickory Charcoal but it has been constant white smoke for the past 30 minutes. I know white smoke is not good for a long period of time, so I am at a loss what to do. I have the bottom vents, where you put in the logs and Charcoal at fully open and the top of the smoker close to being completely closed but not all the way. Any suggestions as what to do to get down the white smoke and get the temp up to around 220 again? Thank You for your help!