I believe the washers under the hold down screw are wave (bow) washers and not flat – that lets them hold the point base secure enough not to move on their own but lets you move them when with the adjustment screw or a nudge with a screwdriver… nudging the base towards the condenser will give you more gap to work with if they aren’t opening enough. When I was confirming this I also noticed that a 1957 magneto does not have a washer below the adjustment screw but the 1963 magneto does – I’m guessing they figured that adding a washer there helped hold the adjustment.
