I have my shark fin jack (stamped steel and riveted together) taken apart for restoration and found what looks to be a stamped bit of light sheet metal similar to how a seal is constructed. Maybe a spacer for the vertical shaft as it was found in the base. It is mangled badly and exact shape is not apparent. Possibly it may have been a straight strip and spaced the guide as it slides up and down? Anyone know what this is and where it fits? I am sure it was mangled by the workings of the 2 gears in the base. If you recognize it what would be a good replacement? Thanks