Sorry for the delay !

Derek is right - in the "Home" position, the stepper arm is all the way to the left ;




From memory - Once the ball is in the trough, the ball count unit advances, but PF does not have a trough - the ball is served from the center of the playfield. So it might advance straight away.

So after advancing the unit 6 times, it finally makes it to the end ;




..and then we reset, and back to "home";





Hope this helps !