yes this is common, also MapSource behaves different than Roadtrip.Garmin uses different Algorithms. there have been reports too that different devices behave different. <div><br><br><div class="gmail_quote">On Tue, Jul 13, 2010 at 10:32 AM, Nakor <span dir="ltr">&lt;<a href="mailto:nakor.osm@gmail.com">nakor.osm@gmail.com</a>&gt;</span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">    Hello,<br>
<br>
I do not know if this is know or not but I though I would share my<br>
experience on routing. I created a map covering southern Michigan,<br>
Indiana, Ohio and Kentucky. When I try to route from Detroit to<br>
Louisville with my GPS (e-trex vista) it takes some time but it works<br>
fine. If I try the same thing with  MapSource it fails and draws a<br>
straight line. The route found by the GPS (I-75 then I-71) is going<br>
through 5 different tiles.<br>
<br>
   Thanks,<br>
<br>
N.<br>
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</blockquote></div><br></div>