for some reason on my unit (in map mode) the little arrow that shows your place and direction is always off a little. I always have to go to the settings menu and modify current loc. and adjust the arrow to point in the direction I am traveling. it still shows me where I am at and all but the direction is always off, like if I'm heading north on a street it will go north on that street but it might be pointing southwest.
what do I need to do?