Arranging the model appropriately on the for in-game placement

[Kralyerg]

You have to account for the road, if you're going to give it one.  If your model itself is, say, 2x3, and you want to give it a road in front of it, then you have to tell the game that it's a 2x4 with a line of roads.  Or if it's 2x2 and you want a road, then you tell the game it's 2x3. So you may have to push the center of the model back half a square to keep it centered.