My target temp is 325. I'm using either style of Hunsaker Vortex for the coals. I can't reach the target temp when using the HM, but I can when I remove it and just use the draft dampers. I've tried adjusting the max fan speed from 15 to 100% Lower temp cooks work great. The HM allows me to hit about 280 and runs the fan 100%. Using one draft open plus the HM causes smoke to blow out of the draft damper. Opening all draft dampers with the HM removed jumps the temp up to 325+. Any suggestions? Do I need a larger blower and more exhaust? Thanks.