Now that I’ve got my unit working, it’s obvious my original mapping is leaving the edges unmowed (Im sure because Yarbo use the center point and not the left side as I was mapping.
Is there a simple and/or quick way to adjust a map a couple inches along one of the boundaries?
Not too easily no. They used to have an expand area feature, but this only applies to turning. I would consider remapping the areas. Keep in mind that the boundary line it maps is the center of the core. But first I would check and make sure your area advanced safety buffer settings are set to zero and not the default of 4 inches.