 They didn't have screws or bolts so they used lynchpins to hold things together.
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 Screws are #10 self piercing sheeters, with rubber backed washers. Very handy.
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 scoring on the pistonfrom the mount screws??
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 put the little templates to measure the height of the board from the seat then level up and drill holes and put in screws
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 Brownie Flash II 1958 1963
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