I have a Lowrance HDS 12 live, Halo 20+ and Point-1 installed and Navico chart , wanted radar overlay. Lowrance plotter only shows a few rings on overlay but no radar, Spent 3 hours on the phone with customer service 1-2 tier level of support and sent photos of plotter screen and radar screen to Lowrance. They are confused looking for help. What is missing for radar overlay??