Here's the schematic from Flying Chariots which may be similar to Swing Along:
Flying Chariots Add Replay (resized).jpg
At the bottom of the schematic to the right is the "2nd Players Hundreds" or 2nd player's hundreds score reel which completes one of 10 possible circuits as the score reel rotates. The "Score Adj." or score adjust down through the middle of the schematic are the jones plugs you can change to set the high score levels. The schematic is drawn with 8 award levels used although any number can be set by the operator (you). The lower four of those award replays are for scores less than 1000 points and the upper four award replays are for scores over 1000 points.

If you're getting extra replays for player 2 it could be that the switch (in red) on the 2B/2nd Player Thousands relay is stuck closed so you always get replays for whatever scores you've selected over 1000 points, even before you've reached 1000 points. If you remove the jones plugs for the 1000+ points score levels and the problem goes away that would support the theory.

If not, changing the configuration of the replay levels and observing the results might offer more clues about where the problem is. Try it with no replay levels (all jones plugs removed), just one <1000 point plug used, just one >1000 point plug used, etc.

You don't have to play the game during the experiments. Just start a game and hit a 100 point target, or manually activate the Q/100 point relay in the backbox. The reference photo at
https://gottliebpin.com/archive/GTB-Ref/195/gtb-pb195-backbox.jpg
shows where the Q relay is.

/Mark

Ok, so it's an intermittent issue. It could be that the switch causing the problem is just barely closed, or gapped too close.

I don't follow. So it missed the 1100 replay award two out of three games?

If it awarded at 300 when only 1100 was set it's likely because of the switch I highlighted earlier.

What 6 solenoids?

Does Swing Along have a 400 award level or a 1400 award level? Flying Chariots shown above doesn't have a 400 level.
Also, when you got the award at 170, was it when you stepped from 169 to 170, or 160 to 170, or 70 to 170? A replay should only be awarded when the 100 point relay fires so an award while stepping from 70 to 170 could be possible. In any event, stick to 100 point increments for now to keep things simple.

Do you ever get an extra replay when the only award level is set below 1100?

Have you tried blocking the red 2B relay switch above with a piece of paper and setting only one award level above 1000? That should prevent the award from happening but also all the extra awards. The 2B relay is likely in a bank of trip relays in the bottom of the cabinet.

Also, make sure you understand how the jones plugs work. There are two different sets of plugs you can put into the socket. One is for replay levels up to 1000 and the other is for replays over 1000.

Here’s what I have for Swing Along

9658EC2B-A465-47BE-B020-6D2A4032806B (resized).jpeg