cheers Graham ill look out for some cement. as for the pre 65 plastic chain slipper i was thinking off buying 1 but i dont think it will stay on unless i drill a small hole into the swind Arm.and use a self tap screw but i dont want to start drilling holes in the swing Arm as you probley know there hard to replace. so ill try the cement first the slippers last years before they need changing also theres rubber already wrapt around the boss ive tryed it and it sits nice on top cheers guys. oh Graham if i did ever what to take the slipper off whats the cement like to take off?