I bought a New Garmin Edge 1040 and just went through the installation routines. After connecting it to Garmin Express it asked me to update the maps. US and Europe were pre-installed and I actually need both as I am cycling in Europe as well as the US East Coast. However, it would not update as there was not enough space. I ended up selecting only the European Map to be installed to get the update done. However, I would like the US Map to be installed as well. How do I do this ? Are ther old Map Files/.img that I can delete manually before starting the map installation ?