There are two Score Reset Relays and #2 Score Reset relay works the 4th player score reel. Check the contacts are clean and closing on this relay.

Do the fingers on the part that turns reach that far out on the board? If not, then solder a wire across the break. If they do, then you’ll need to hunt down one from a donor score reel.

Dave

I had one in almost exactly the same place and it easily missed the fingers. By the way it looks like there is way too much grease on the board, way outside the path of the fingers.

It's harder to tell on a CC game, but one of your zero pos. switches isn't closing. Check for continuity on each switch with the reels at the zero position. Those switches are all in series. So you can hook one end of a continuity tester to the green wire on player 1 - 10 point score reel board. Touch the other end of meter to the White/Brown wire (right beside it). If you have continuity, leave the probe attached to the green wire and move to the next one. Now touch your probe to the White/Brown wire on the 100 point reel. Continue to move to each reel until you lose continuity and you've found your open switch.

I have couple couple of these reels left..pm if interested.