Help!: Garmin 705 detailed turn by turn clarification

I have a Garmin 705 and have mapsource detailed maps installed on it. I can lay out a set of directions on it using the mapsource software and save it as a GPX file --copy it into the GPX folder on the unit and then go to saved rides --- click the name -- and viola turn by turn with the street names When I do a map on Map my ride and save as a GPX file and then put it in the GPX folder on the unit it comes up with no street names and just follows a very generic purple line with no turn by turn commands Is there a way to accomplish the mapping with map my ride (which is far easier to lay out a set of directions than map source) and have it on my 705 with turn by turn with street names. thanks.... Mike

Mike...other than the disconnect with MMR, do you like your 705?  Do you use it as a cue sheet or just to map out rides...?