Thanks Stymie, you may be on to something. While on the map screen, I have two readouts that won't change. Position 2 out of Azimuth, and Position 5 out of volts, IIRC. The rest will change, and those two will indicate a change is possible by the dropdown, but will not change when I scroll through the choices or choose a different readout. I can't believe I haven't noticed that before now. I've had it a year. LOL