I thought because I had the game on normal that you only lock 2 balls then multi ball starts and if you played it on the hard setting you would have to lock 3 balls first. So I just thought that the castle lock 3 would never light. Well I watched it in attract mode and thought it was funny that it didn't light. Went into single lamp test and selected it and it will not light. Lifted the Playfield and if I wiggle or hold the connector it will light. However I cannot keep it lit once I take my hand off the connector. Wiggled the wires below the connector and it wouldn't light. So I'm assuming it's a cold solder on the other side of the Playfield. I really hope this isn't the case since all the connectors are hot glued and plenty of them. I haven't done it but I think another connector could be swapped and go through the lamp test to see if the castle lock 3 lamp test would light another insert. That would prove the connector is good. Is this test ok to try Lloyd. All connectors have the same ground pinout?