The Visible Infrared Imager Radiometer Suite (VIIRS) Reflective Solar Band Automated Calibration (RSBAutoCal) Day Night Band (DNB) dark signal and gain ratio calculations exhibit two issues: gain ratio trending instability and gain ratio differences relative to those calculated using the VIIRS Recommended Operating Procedures (VROP) monthly look-up table (LUT) generation tool. These issues have thus far prevented transition of RSBAutoCal to automated mode for these two DNB calibration parameters. In this paper we describe the successful diagnosis of the gain ratio stability issue. We also present a solution to stabilize the gain ratios, thereby clearing the way for their tuning to match the VROP derived gain ratios and transition of RSBAutoCal to automated mode for both dark signals and gain ratios. This solution has been fully and successfully tested with Matlab code developed to simulate RSBAutoCal gain ratio and dark signal calculations and is ready for delivery for operational implementation.