Hi Wayne
welcome to pinside.
Warning - Danger --- in Your pin is 6Volt AC, 50Volts AC, 110 Volts AC - maybe 220 Volts AC - NEVER touch bare metal in the pin.
The ipdb http://www.ipdb.org/machine.cgi?id=1157 has no schematics to "Hi Deal" --- do You have a schematics ?
ipdb informs us http://www.ipdb.org/machine.cgi?id=1112 that "Hang Glider" is much alike "Hi Deal".
The start of a new game in Your pin is nice but then the Score-Motor keeps running and running and running.
Can You locate the "Coin-Relay" in Your pin ? Can You locate the Credit-Relay in Your pin ? Have some points on the Score-Drums - then start a game - I assume You press the Credit-Button (?).
See the Credit-Relay pull-in and the Coin-Relay pull-in --- after the Score-Motor made a turn (means half a revolution): These Relays should quit pulling --- in Your pin ?
My working theses is "Coin-Relay or both Relays" do not quit pulling - so the pulling Relay(s) make the motor run and run and run. Greetings Rolf
0Hang-Glider-Work-01 (resized).jpg