Working on a Gotlieb Top Score. Im not getting any lights on the 5 yellow inserts in the middle. They are supposed to light one at a time when the spinner flips. I dont think the sockets are bad. I replaced one. It lit one time then nothing. It runs off of a mini stepper. I have cleaned that very well and still nothing. The lights on the two lanes on the right,which run off the same mini stepper, alternate like they are supposed to. Any ideas where else to look?

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Good news. Used a jumper wire and they all lit. Ended up just pressing down on the wiper arm on the mini stepper. They all lit up. Just need to tweek the wiper arm to give it more tention on the board.