OK Eagle fans, anyone know how I can keep the presets on my new units? I go thru the menus every stinkin time to put in the right unit of measure, show temp, and go advanced signal with no fish ID for real returns, and yet every time I turn it off, I have to start all over again when restarting it. Not only unplugging, but even shutting it off. I may have to leave it on all day, even when the TM is up and I'm running, in order to keep my settings for the day. Don't they have a lithium in them to maintain? My 'birds did, I liked that. Any help would be really appreciated.