76cs not sticking to pre plotted route

[adv]

My 76 CS has a habit to not stick to my pre plotted routes on mapsource. When I select the route, it will ask me the fastest route or off road. No matter which one I choose, it will end up rerouting and doing a "as the crow flies" type of route.


Any ideas?

 

[subie]

 

[adv]

 

[gecco 162]

 

[adv]

 

[Moondog]