Ok, I cleaned and adjusted all the point relays for good measure.
I haven’t resolved the issue unfortunately but I have some more data to share that might help in a solution.
When I set the game to 5 ball, everything scores and chimes as they should. The pops chime when a ball hits them, like they should. All is well.
But on a 3 ball game the pops will only score, not chime, when hit with a ball. (If I use my finger and touch the skirt the relay chimes and registers a score) Everything else scores and chimes as it should on a 3 ball game, even all the other 1000pt shots.
I don’t understand how the pops could work in 5 ball (suggesting the problem isn’t a switch adjustment or mechanical issue at the pops) and the 1000s relay works using every other switch to score 1000 points(suggesting the relay is in proper alignment.) But the pops still do not chime when a ball comes in contact with them for 1000pts.
I watched the relay while the pops were both manually triggered and had a ball roll into them. It seems to work exactly the same except no chime.
This leads me to believe the problem is somewhere in the 3 ball circuit. Unfortunately I left my DMM at work so the troubleshooting will have to continue tomorrow.