Quote Originally Posted by Tigertrader View Post
while I can put the gps into "demo" mode, I can't find how to reposition it. The Oregon software is very unintuitive.

Still no idea about the 3D data though?
Read tutorial for beginners on the first:
http://garminoregon.wikispaces.com/Navigation+and+Routes#FAQ-NR3.) Can I simulate driving a route on my Oregon?

There is no any DEM data for 3D mode on this maps. I think there is no any DEM data for 3D on Gmapdem.img too. Only TOPO series maps contains detailed DEM data for 3D mode on hendhelder.