If the chart plotter on my TZT2 is set for example for a 2 NM edge to edge range. The overlay radar will show a similar range like 1.5 NM with .5 NM rings. If I zoom out on the chart platter to say 20 NM edge to edge, the radar remains at 1.5 NM with the 3 x .5 NM rings. It does not change to match close to the chart plotter until I press the circle with arrows refresh icon. I would like to see if there is a way to make the radar change to match the chart plotter automatically.