Hi Alex
I am not sure about Your post-5 --- is it description of "have found a fault" ? or (Your 'where to next?') is it a report on a still open problem ? Greetings Rolf

Hi Alex
What do You have ? - two Coin-Slots or three Coin-Slots ? Do You have the Alternator-Unit ? If You have two Coin-Slots - are they "25 Cent and 10 Cent" or "25 Cent and 5 Cent" or "10 Cent and 5 Cent" ?
What do You want ? Just make an nice set up "5 plays for a big Coin - 2 plays for a small Coin (or such)" in Your pin ? Or do You want to bring Your pin (wiring) to "exactly as shown in the ipdb-Schematics" ?

Some true Add-A-Ball-Pins did not have an REPLAY-Counter (what for when the state did not allow Replays) - simply one Coin-Slot for "one Coin thrown in starts a (the) game".
Many pins can be adjusted to "one (small) Coin thrown-in gives one Play - starting a Play". I see in the schematics "Little Chief" the plugging "one (big) coin gives SIX Plays - five step-ups on the Replay-Counter and one as 'starting a Play' ".
My Gottlieb Liberty Belle has the funny adjustment "one (small) coin - one step-up on the Replay-Counter and one as 'starting a Play' ".
I never have encountered "ONE Coin - ONE STEP-UP on the Replay-Counter". Greetings Rolf

Hi Alex
I do have problems with "Adobe Acrobat Reader" - my version is smashed - cannot delete completely - cannot load an new version - I must use other PDF-Readers so I (me only) cannot look up here:
http://www.planetarypinball.com/ to http://www.planetarypinball.com/mm5/merchant.mvc?Screen=BOOK
then in such stuff http://www.planetarypinball.com/reference/partsmanuals/WMS_Parts_1964/index.html unfortunately I cannot look up - but You can browse around ? ...

But I have some pictures - the first JPG shows the Alternator-Unit in my Space Mission - unused. The second JPG shows an No-Match-Unit - an stepper - endlessly forward, forward, forward. In the third JPG we see my Space-Mission-No-Match-Unit - see "green 3, 4, 5": a Switch (blade-green-4 and blade-green-5) is actuated by a hard to see gear (green-3).
And in my last JPG we see (copy of planetarypinball parts-book) bottom-left: On the axis of the stepper maybe is a gear with only ONE tooth*** or maybe FIVE teeth*** to actuate the mentioned switch - maybe there is no tooth***, Zero teeth*** to actuate the encircled-green switch.

The function of the ALTERNATOR-Unit for starting a game is: Switch is stepped (starting with ON ?) OFF-ON-OFF-ON-OFF-ON etc. so we must throw-in two Coins to make the Start-Relay to pull-in (when switch comes to "ON" position). An Alternator is needed when we want "TWO Coins must be thrown-in to start a game" - a seldom used function. I actually never have seen an working Alternator-Unit. Greetings Rolf

0Space-Mission-Alternator-Unit-1 (resized).JPG0Space-Mission-No-Match-Unit (resized).jpg0Space-Mission-Match-Unit-real (resized).jpg0Space-Mission-Stepper-Unit (resized).jpg

Hi Alex
I was scratching my head - in the manual of what pin did I see the drawing of an Alternator Unit ? Lucky me I was looking at other topics tonight - hihi - Dipsy Doodle YES we see the Alternator Unit in the manual - see here https://www.ipdb.org/files/683/Williams_1970_Dipsy_Doodle_Instruction_Manual.pdf on page-4 (ori-2). Greetings Rolf