I have a 1976 Grand Prix pinball I am working on. The problem I am having is the stand up switch on the left side and the right side that is suppose to advance bonus and score 500 points. The switches advance the bonus they are suppose to but they do not score the 500 points or make chime work.. I can score 100 with the spinners and it works and chime works. There is a 500 Relay I see on schematics. In the backbox i think? How is this 500 Relay suppose to work? If i am in the middle of a game should I be able to manually activate the 500 relay and it score the 500? I would appreciate any help. Thanks