Quoted from Galacnor:the Ball Index Relay, and it seems that it doesn't pull in at all after points are scored.
Inspect and diagnose this circuit with Alligator clip jumper wires
http://www.planetimming.com/Pinball/troubleshooting/EM%20Troubleshooting.pdf
http://www.pinrepair.com/em/index3.htm#features