Previously, when I digged a route and selected "follow route", two screens would appear - A current position information screen & a direction indicator screen. For some reason, when I now repeat the above, the direction indictaor screen seems to be infinitely long. I have tried scrolling it, and after about 50 scrolls I get to see the arrow, and after a further 50 I get to the bottom of the screen. When I try and resize the screen by dragging the corner, it does not appear to get any smaller - is there a solution to this? or is there a way to set the GPS unit back to factory settings?

Many thanks.
Routerman