on a 70-72 malibu, you have to pop out three inserts that cover the phillips screw holding the speedo head in. Anyone know where you can buy replacement inserts, small black plastic ovals??? I broke one and lost one, i have an El Camino I can rob some from but its my next project and the same problem will be there in a year or so 3-5-7- who knows how long ha ha any help would be appreciated thanks Kenny