Nor sure if anybody is a Garmin expert. I am having problems with getting a trail on my 70DV, it was working fine up until the last few trips. I have checked the manual and I have done what it said however the trail won't appear. Tried a heap of other things to no avail. Not sure if anybody else has had this problem??? May have to contact Garmin, not sure what their customer service is like???
Berger