I have been working on a client's Big House for quite some time only to discover yesterday that it is not a production game, but a prototype. The previous technician stole the client's MPU and driver, so I have replaced them with beautiful new Schwemmer boards, but the game does not work correctly. Is the prototype software for this game available anywhere?

I do not have photos but might be able to get some. The coloration of the backbox does not match photos on IPDB.

The game boots and will start, but does not handle the ball locks correctly. The game starts with Lock 1 lit. When a ball gets into the kicker lane, the gate begins to flutter instead of staying open. So instead of kicking the ball to the auger, the kicker kicks the ball back into play. Since there is no switch at the auger, the game assumes the ball is locked and puts a second ball in play. Play will process with two balls until one drains. Now the game thinks it is on ball two.

Under the playfield, the two relays are simply labeled A and B. B controls the auger. I could not determine what A does.