Treating the score totalizer stepper unit:
I disconnected and cleaned the solenoids. One of them is wrapped with extra paper due to exposed coils.
Next, I detached the leaf switch. The adhesive in this switch is giving way, so I have it held together with a clamp. Once we put it back, the screws and nuts used to hold it in position will keep it intact as they did before.
Then, I unmounted the score wheel assembly, which is on three dampers we will be replacing. Rather than desoldering all those wires you can see, I tilted the unit down. unmounted the arm assembly in back, and pried the cog assembly off from the front. I cleaned grease and dust off, then applied a wire brush.
I cleaned the contacts on the back side, and sanded them a bit. I still need to clean the arm assembly.
I got the cog assembly axle most of the way, but not completely, back in. Without a good means to tap it the rest of the way in, my best current idea is to use extra washers and the nut on the back side to pull it into place.