light socket crumbling apart

Unplugged microwave before doing anything.Removed 6 screws holding the bottom of the microwave on. Disconnected 1 wire connector connecting the light sockets.Removed 1 screw on each socket to remove and install new socket. Reconnect the 1 wire connector and reinstall the 6 screws holding the bottom of the microwave on. Removed 1 screw holding the glass lens in place on each light and installed 1 bulb in each and reinstall 1 screw in each lens. Replug power cord. DONE !!