I though Starting a couple revs ago, the montana honered the type of routing you had setup in basecamp? I setup my own profile in base camp and told it to avoid any roads higher than state road. Then set the profiles in the montana to match. I never put waypoints on irsections because the montana anounces both waypoints amd corners. To much voice trafic if the 2 points are to close.
2014 R1200GS - My Naked Street Touring Bike
2000 KTM LC4 640 E - For everything else