Rand Mcnally TND 710 GPS Receiver "recent films" Questions

DISPLAY IS LOSING POLARIZED FILM I recently purchased a used c80 system and I noticed that the display appears to be losing the polarized film that allows you to see easily during direct sunlight ...

do you have to type in your home address before you type in your destination address and do you always have to remove the map film covering to do so? You can set your home destination so you don't ...