Hi gottguy, MarkG +
the "strange to us" activating of the Outhole relay a second time - King Kool: https://pinside.com/pinball/forum/topic/gottlieb-king-kool-player-unit-not-working-correctly#post-4845077 --- also see Orbit https://www.ipdb.org/showpic.pl?id=1724&picno=19273 the lights on the playfield - almost a circle. When a new ball shall be given - the stepping forward of the light to position-zero is done by the outhole relay pulling --- but sometimes the light must step more than 5 steps - "not so good Gottlieb solution": Lets make the Outhole relay pull-in a second time ...

gottguy - Your (post-1) "player unit not always advancing" has not much (my opinion) to do with "outhole relay pulls-in a second time (caused by the pulling-in of the P-Add-Player-Unit-Relay)". Greetings Rolf