BH inAZ,
In fooling with my 60CSx I find the problem much reduced or eliminated by the following.
Select only one map to view at a time (in your receiver) and when you reach a point on the border go to the next state. This works for me even with some of my home made maps enabled. It's possible that in places you may end up in no mans land for a short distance, but even this can be remedied by waypoints if depending on the GPSr for travel/location.
As to your first issue if a map does not cover a given area (which I have had little problem with but the above will work there also) then there is no way to make it do so. something we live with.
In fooling with my 60CSx I find the problem much reduced or eliminated by the following.
Select only one map to view at a time (in your receiver) and when you reach a point on the border go to the next state. This works for me even with some of my home made maps enabled. It's possible that in places you may end up in no mans land for a short distance, but even this can be remedied by waypoints if depending on the GPSr for travel/location.
As to your first issue if a map does not cover a given area (which I have had little problem with but the above will work there also) then there is no way to make it do so. something we live with.