The washer to eliminate the play of the lever, is not easy to center, so that you can get finally the screw through frame, lower tang, lever, carrier arm and washer. With my new pin made out of tool steel, it's simple.
Additionally 6 washers.
2 washer: OD 10mm, ID 5mm, thickness 0.2mm
OD 0.39370", ID 0.19685", thickness 0.00787"
2 washer: OD 10mm, ID 5mm, thickness 0.25mm
OD 0.39370", ID 0.19685", thickness 0.00984"
2 washer: OD 10mm, ID 5mm, thickness 0.3mm
OD 0.39370", ID 0.19685", thickness 0.01181"