I am trying to put the bed together for my 39 chevy short bed. It came in pieces without the wood or the metal strips. I have the metal strips on the way now. Does anyone know what the width of the wood should be? I have red oak that is 7 1/4 inches wide and it looks a little wide for the holes. Should it be 7 inches wide and that would give a space of about 1/2 inch between the boards? Any help would be greatly appreciated. Ed