I can tell everyone is under 65 that responded. I (age 76) have the tool for adjusting the adjuster/lock nut style rockers and it childs play. Tool has a double bend with a 5/8 box on the end. Riveted to it is a spring loaded flat screwdriver shaft with a knurled knob on top. Drop box end over set nut, turn screwdriver till blade drops in adjuster---spring holds it there, loosend set nut and turn knurled knob to adjust. On some other tools the spring held the blade away from the slot but since the box end held it centered you just pushed the shaft down and turned till blade dropped into slot.
