I have the Char Broil Silver smoker. Its fairly well modded up. Lowered the chimney to grate level, I have the baffle, and tuning plates extend about 3/4 the length of the bottom. For the life of me I cant get the internal temp to go above 225 or so. Even with those mods in place I am seeing 40+ degrees diff from firebox side to chimney side. If I can get the temp up, i can deal with the temp difference. I started with 2 full chimney fires, and added 3 more fully lit since. Firebox vent is full open, chimney vent i have experimented with going from open only a little, to full open. Im kinda stuck here. I started with a charcoal wire basket, but dumped it, thinking that the wire was too close together and was causing little airflow. Now the charcoal is on the grates and I have seen little to no change in temp. Suggestions? I just figure its an O2 issue?