Hey there, Rootfifth. If you go in to your AppData > Roaming directory and navigate to hexxit, within the .technic directory, you'll find another directory titled 'config'. In there you should find a file called MapWriter with the .cfg extension, this is the file you'll want to edit to modify your minimap. I hope that helps! I definitely agree that the default is a little on the large marge side hahaha