[Eliot Ness]

I had a hard time finding it too Terry, but although it's not labeled SW 8, it is by the power transformer, but I can't see how that is controlling sensitivity (local/distance) unless there's another part of the switch I haven't found yet...... I just found it:

   

I'm thinking like tbone, an open coil before the 6L7.... also check the components in the area like R2, C2, C3, etc.