I am currently building a new PC for my dear wife. And I have what maybe the Tom's Hardware Most Stupid Question. When you are physically mounting the MB to the floor of the case, do those little fiber washers need to be placed under the heads of the mounting screws? I apologize in advance for my simple question, but it's been a while since I last positioned a MB in a case and I don't want to bend down (I'm officially a geezer[62+]) and disturb the dust bunnies that may have organized since I last mounted the MB in the PC that I am using to write this plea.