Just bought a 522i from a guy and had it put in my P4. When I try to save a waypoint it says my memory is full and I must delete icons, waypoints and trails. I thought I got in there and did that, but obviously not. Can any of you give me an hand on this, is there a “reset” to this. I cant see any waypoints or icons that are on the screen, the header of free data remaining is 25%. Other than not being able to save spots, the unit is great and EKs Marine in Monroe did a great job installing it. Any help would be great. Bryan…