problem with dual point no spark

That gap looks like 80 to me. :D
One other thing I can think of is that a LOT of people make the mistake of putting the wire on the points in such a way that the connections isn't insulated from the points body/ground.
The wire connector has to be away from contact with the base of the points and only in electrical contact with the arm that moves.

Hope I splianed that ok. LOL