The credit wheel is press fit, you spun it out of alignment.

Hi TimO
I am german speaking - I am not sure what is "a quarter turn too low" - a quarter of an revolution is 90 degrees faulty --- a quarter of one step is "slightly faulty" - what do You have ?

I look at Your picture in post-1 and say: The bolt on the left in the picture does open the switch TOO much.
See my JPG - stepping up the Replay Counter means turning clockwise - we manually can activate the Step-Up plunger. Stepping down the Replay Counter means turning counter-clockwise - we manually can activate the Step-Down plunger. When working on the Unit: We can un-hook the spring wound around the axis (marked green) - loosen it or tighten. If we have problems with the bolts and the switchblades: We can unscrew the switches - take away so the wheel and the bolts can be stepped to "where we want them" - then mounting the switches - then with proper tension in the spring: Hooking-in the spring again.
My JPG is "about five replays on the counter" - stepping down towards ZERO: "Red dot bolt" will open "red-2 switch". The Maximum on my counter is about 25 replays --- stepping up up up and the "blue dot bolt" will open "blue-1 switch".
The "written above" is about "Your unit is WAY out of adjustment" - when You have "just a little bit of adjustment is needed": Write. Greetings Rolf

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