You can set the HeaterMeter to manual mode then set it to 0% and 100% output which will give you a pretty good range. However the settings in the default config are conservative as to the endpoints so you can actually subtract some from the low or add some to the high to increase the travel range. They're intentionally not set to a point too far because some servos could be damaged if the 0% is way beyond their pulse range.
Thanks, Bryan. I didn't realize that the manual settings changed the servo position as well as control the fan speed. That's good to know. I do use that setting sometimes just to get the fire started when I'm not planning to use the HM for a cook. I'll see if I have some time at lunch to monkey with it--I'm sure looking forward to having a proper damper set up with them HM sure sure. Thanks, Tom--that and my 2nd case came in yesterday.