I am trying to rebuild my power steering cylinders on my original 580CK (1967). The manual (see photos) shows the 'rings' that came in the kit, but doesn't identify which ones are which, or what side faces which way. How does one know which way they go on the cylinder? I put them on 'best guess' and it leaked all over, so I am trying again. Can anyone tell me which way the parts are supposed to go? There was one more in the rebuild kit then shown in the manual. Thanks for the help.