Sid here . I earlier mentioned a trick to eliminate the free float in the damper once it's rebuilt , as its being filled . I put the fluid in a clear pint plastic bottle with pointed spout that fits the filler plug opening snugly . The clear bottle allows you to see the air bubbles exit
As the new oil is squeezed in , the damper body is pulled longer as this is done , it's upper eye in your vice . The instructions as written say to close nearly all the way , before the plug is tightened . THAT'S THE TRICK ! So simple but evaded me . I place a quarter inch nut between the upper eye body D8 and the damper top D13 so that the rod can't enter FULLY when compressed firmly by that distance . This leaves a bit more inside , unexpelled , when the plug is tightened . Seems weird I know but that's the answer . Work it a few strokes and then let hang overnite by the upper eye To settle down . Next day pump it a few more times . Still has the designed in soft movement if moved slowly , stiffens up if moved quickly but the free float is gone .
You can add a third wiper lip by slipping on another on the shaft beneath the upper brass piece D13 , a Parker Stat o seal
600- 011- 7/16 . Of course Viton O rings and telefork fluid , 30-40 wt . , I add a squirt of Hypoid or 50 wt. motor oil myself .