Ok guys (and gals). Any advice will help. I am getting a really nasty bitter taste on my meats. My drum has three 3/4" nipples for intakes. One of which has a 90 turned up with a 24" pipe going to a brass valve. I use my bbq guru on the valve. I am able to hold temp well (usually 240 - 250). My lid is an old lid off of an old uniflame kettle grill. I am using the existing pinwheel as my exhaust. I burn regular Kingsford briquettes, start with half a chimney of coals and dump onto my unlit in my basket. (Mixed with wood chunks). So... I'm getting a lot of white smoke for the first hour or so. Do I need more intakes? Bigger exhaust? Different charcoal? Any advice?