Just noticed that MapSource and Garmin take different routes. Seems kind of odd that their software doesn't use their route. (Actually a better one.)
Any thoughts on that?
Are you sure you have the same map versions on the unit and on Map Source?
This is a commonly debated issue. MapSource has more control over avoidances, what type of roads have priority along with other parameters/settings which can affect the route. Also, the routing algorithms are apparently not exactly the same. You can read up more at Garmin's forum here:
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