Edit: Solved the actual problem; it was a case of residual magnetism on the L (Rollover Series) relay.
Got a minor problem on the infamous Possum, aka Gottlieb Big Top. When I earn an extra ball by hitting a rollover, the stepper on the Continues to Play unit advances correctly, but the coil on the stepper often stays engaged until I hit something else to score. Then it stops.
I would assume that the End of Stroke switch on the stepper should open when the coil engages and that should cut off power to the coil right away, rather than having it stay energized until the ball hits something.
This problem really isn't much of an issue, as there are a couple of pop bumpers right below the rollovers and I almost always hit one right after the rollover, thus turning the coil off.
Still, I'd like to take a closer look at the EOS circuit and see what's going on.
BUT - I can't find anything on the schematic that looks like an EOS switch for the Continues to Play unit. In fact, I can't find anything on the schematic that looks like an EOS switch at all.
I'm sure I'm overlooking something obvious here, but could someone please enlighten me about this?
Relevant part of the schematic attached; full schematic is here: