I have the manual and schematic, but I'm having trouble interpreting what should be in this circuit. The situation is that, during game play on 5 ball setting, the side drops score 500 as they should. On 3 ball setting, the side drops do not score at all. The upper drops do not score during game play, regardless of setting. Bonus scores correctly. Each time a side target is dropped, the score motor turns and the D Relay activates. Each time a top target is dropped, the score motor turns and the C Relay activates. I'm completely stumped. Everything else on the game (save a sometimes sluggish bonus unit) appears to work correctly. The switches on the target units and relays are clean and properly gapped. Any thoughts on where I should be looking, either on the schematic or the game itself, greatly appreciated!