Calibrate Telemetry Radio RSSI in Mission Planner HUD Display?

I recently deployed a set of 915MHz telemetry radio units for a project. I display the RSSI on Mission Planner, and the display ranges from about 30 to 130. I would like to set it to be more like 0 to 100.

Is there a way to calibrate the RSSI in Mission Planner?