Ok...so I did my calibration and all was well until one day I turned on the master and the SV said I had 22+ gal on the left tank. I knew it was wrong cuz it have half last time. Then I went back into the settings for the calibration mode. I noticed this time on the top right corner it list the sensor volts receiving I guess. At this time it was showing 4.99 volts, when I calibrated it was showing 1 or so volts. Not sure what is going on but it keeps switching back and forth. see pics..pls help