Hi Briehl
see the JPG - "encircled red" I marked an arm in my Replay-Unit --- when the Unit shall step down one step: This arm is moved clockwise --- a tooth on the arm blocks the gear / tooth on the wheel - the spring wound around the axis would like to turn the wheel counterclockwise all the way --- but the tooth on the arm hinders - the tooth on the arm allows only one step down. Do You also have this arm but angled away / wrong position ?

The "encircled green" --- hard to make a good picture --- on my Unit the "distance in-between the two metals 'framing my rosa/ pink dash' " are closer - they almost touch. Greetings Rolf

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Hi Briehl
hmm, no luck. Here http://www.planetarypinball.com/mm5/merchant.mvc?Screen=BOOK are several Williams books - the 1966 says on page-13 http://www.planetarypinball.com/reference/partsmanuals/WMS_Parts_1966/index.html#/13/zoomed the shown Replay Unit is first used in "Pot-O-Gold". Your pin is older - my Units are younger than Your Unit. (((And the 1964- and the 1962-book are not really helping)))
Thanks for the picture in post-14 - has on Your Unit - on the arm: Something broken-off ? I wonder what makes Your Unit to exactly step down ONE step ?

Not a fix - but some "work-around (?)" - You adjust the unit so it steps down correct - set the pin to free-play --- and live with the "faulty stepping-up" ? Greetings Rolf

Hi Briehl
I hope for another pinsider to chime in --- an owner of a pin from the time of Your King Pin.

I studied my Replay-Unit --- jrpinball in post-17 said it "on the step-up side".

I do not understand how in Your pin the step-down can work --- (I am german speaking - I found a nice german site) I show a JPG from a german site - see the first JPG --- the stepping down on the Replay-Unit is like an old mechanical watch tic, tic, tic, tic. The balance on an mechanical watch is the "3" and I added a "4a". Look here https://www.uhren-wiki.net/index.php?title=Uhrwerk - scroll down to the "yellow picture" and on the far right You see an animation - NOT WORKING watch. See how "3" and "4a" swing / move.

See the second JPG - the plunger (4b) is pulled-in, 4c and 4d and 4e follow the plunger - the mechanically attached "4a" also moves (to the left) and then the "4e" lifts the "3" --- one "tic" can be made
and then the plunger (4b) releases and the rest returns - another "tic" is made.
The "stepping down on the Replay-Unit" actually is (half-stepped) tic - tic.

Thats why is was asking in post-15 about something broken-off --- I can not imagine how the stepping can be done without an "4a".

Again - I hope for another pinsider to chime in. Greetings Rolf

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Hi Briehl +
I looked through my boxes of spare parts and found such an unit with "up to 47 Replays possible to add-up" - see the first JPG. Mine is gummed-up and a spring is missing - it is not working on its own - I manually must help. Chrimeg came up with an good idea - the Coil-Stop. In the second JPG You see both coil-stops taken-away - the "one in question" is the one in the lower right corner of the JPG. Surprise to me: They look identical - why different numbers in MarkG 's picture (in post-33) ? On my Unit both stops are 6mm (millimeter) thick. An inch is 25.4 mm - so 6 mm are a about 1/4 of an inch (0.2362). Greetings Rolf

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