[mkgmap-dev] Drawing order of route

Hi! When using a route (gpx route) with my generated map on my etrex Vista, the purple route marker is drawn on top of the map, blotting out the ways. When using a Garmin map on my iQue, the route marker is drawn under the ways, which is much more useful. What do I need to change in order to have the Garmin device draw the route marker under the ways? thanks Nop