Great road trip!
Saw your troubles with Universe.
The worst relay bank I have ever had was 1960 Spot A Card - they were all dropping off. Tons of dry solder joints.
My games pre 1955 have all been pretty good.
Wonder if around 1959/60 Gottlieb used solder that wasn't quite as good? Guess we will never know but I know of another Universe that had same issue.
And then getting the S relay to work correctly is tough.