Got a SO 76 back in operation and need bonus features info. When the drops are down and all the lanes (A, B, C, .....) are made the lights below the kick out hole in the center of the game begin alternating. One is "Extra Ball", one is "Special", and the other is "Double Bonus". When the extra ball light is lit and you put the ball in the kick out hole an extra ball is awarded. What is supposed to happen when double bonus and special are made? Should the big red double bonus light come on (that comes on with ball 5)? When special is hit should a game be rewarded? I'm getting an extra ball but I can't tell that anything is happening when the double bonus and special lights are lit. Thanks in advance.

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Please disregard this picture, I have no idea how it got there!!!!

Thanks for the replies. Figured it out today, cleaned a switch behind one of the drop target banks and it then counted the bonus down as it should. I didn't realize it counted it down immediately, I assumed it would have turned on the red double bonus light and doubled the bonus when the ball drained. I've tried to make sense out of the schematic but it's tricky.