As far "I have the actual Savannah set to 160" the SSII is not controlling the auger motor, Rock's Stoker is.
What you have is the wrong probe selected as Rock's Stoker Fan Control.
You have the probe marked Brisket as the controlling temp and not the Pit probe.
The temp is controlled by what is in the first window as FIRE and in your case it is the Brisket probe.
Enter the IP address of the Stoker into the web browser of a network capable device and you get the following page.
This page displays all of the settings for each Temperature Sensor currently plugged into the Stoker. Each setting (target temperature, alarms, blowers, sensor names) can be changed for each Temperature Sensor from this page.
You set what probe you what to be in control under Blower.