If you remove the large screw w/ the big standard slot(silver) that holds the 5/8 adapter, remember the squence of parts inside there. Now inside the cavity that goes to the big outer ring there is a #2 phillips screw. Unscrew it, place a thin coat of JB Weld between the ring and base, replace #2 phillips srew, Re-assemble the 5/8 adapter and the part you just JB welded together. confusing enough, I don't have one on me at the moment.