INSTALLING REAR BAGGAGE COMPARTMENT FLOOR DECIDED TO INSTALL NUTPLATES TO MAKE IT REMOVABLE. MY QUESTION IS THE ONES WHO HAVE DONE THIS DID YOU COUNTERSINK THE FLOOR RIBS AND DIMPLE BOTTOM FLOOR FOR COUNTERSUNK SCREWS OR DID YOU USE TRUSS HEAD SCREWS HAVE ALREADY DRILLED FOR NUTPLATES BUT HAVE NOT COUNTERSUNK YET # 8 SCREWS.