Look inside the clutch cover where the exterior insert is mounted. There are three raised nubs where there are screws for mounting the insert. With the screws still installed, use a grinder, large drill bit, or small cutting device and knock the rounded tip off to make it flush with the rest of the inner casting. Pull the screws and put a dab of thread sealant or LOCTITE on them, and re install them. It's not much material really.