Engine died during break-in

yes. It sounds like the pertronix is firing the coil. The 'finger' (?) is the metal strip that goes from the center of rotor to edge. Its the conduit "roundhouse" for the high voltage spark to each of the 8 terminals. the spark must be able to jump from the tip to the wire towers at the right time too. Very little wiggle room, maybe 20 degrees.
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Thanks, knew that current passed thru it to the 8 contacts in the cap and on to the wires but had never heard it called that.