So I have my Bally PLayboy up and running but I'm having a problem with one coil. It works fine in test, but in a game, it does not fire when the switch is triggered, but will kind of fire randomly if I'm messing around with the wires. Its not like there is a loose connection either, I can jiggle the wires on the coil and nothing will happen, then all of a sudden something will. One time another coil was even triggered. Is this a switch matrix issue or a diode? Thanks!