Somewhere along the line, the voice volume for navigation guidance has gotten extremely loud. In the menus, it's set at +1 for Navigation Volume offset. If I turn the volume **** down while the voice is saying something, the volume decreases temporarily, but it can't go below +1, so it goes back to the loud volume next announcement. I've tried resetting the volumes in the AVC menu, but no luck. It definitely wasn't always this loud, I remember having to turn it up before. Anyone know how I can turn it down? It's borderline unusable, like being yelled at.