Cheers Mordorf

I tested this tonight and at 500ft zoom the map does indeed switch to 1:25K view, so obviously has both 1:50K & 1:25K on the same map. I guess this is just my ignorance of Garmin conventions. On Memory Map which I'm familiar with on both PC & PDA if you load a 1.25K then it stays at 1.25K regardless of zoom.

On the negative side it would be nice to have the Garmin zoomed out a little more and still be able to benefit from 1:25K. At 500ft zoom you can see so little of the surrounding area that plotting a course is more difficult.