Quoted from schudel5:
It is interesting to note, as I thought something was wrong, when you complete the 4 rollovers at the top and get the added ball, only 2 lanes light up again. For the subsequent extra ball, only the two that are lit need to be completed. I thought there was something wrong but learned that's how it was designed.
Yes, this is correct. Same with "Cow-Poke" and "Flipper Cowboy". The two which are lighted and unlighted on the subsequent ball is determined by the state of the alternating relay. This also corresponds with which of the two slingshots is lighted for 10 points. If the lighted slingshot doesn't move on every step of the one point score reel, check to see that the alternating unit coil isn't fried. It's a common issue on "Subway", "Hurdy Gurdy", and a few other games because this coil remains energized even in "game over" state depending on the final position of the one point reel (odd or even number).
Quoted from tscottn:
But once in a while i will get a free ball or two and im not sure how it happened.. Wasent anywhere near the 3k or 5k or did not hit the center target.
As far as a awarding extra free balls, I've seen several "Subway" machines do this, especially when completing the top four rollovers. I had one recently which would award multiple extra balls when hitting the lighted center target. I found a motor switch which was not opening (I believe it was on "C" level of the motor),
and resolved both issues by properly adjusting this switch.
If yours is awarding random free balls, that may be another issue entirely, but note if the subway doors open or not when it gives an unearned free ball. Free balls awarded for meeting a score threshhold do not open the doors. Making the top four rollovers or hitting the lighted center target do open the doors. This may be a clue to resolving the issue.
Quoted from tscottn:
Also, on mine the two rollovers switch from yellow to red after the first set are completed and the next ball is in play.
I would check to see if the slingshots alternate with the one point reel. The lighted lanes shouldn't always be the same two after making the four.
If they don't change, your alternating unit coil is probably bad. It's a common thing on "Subway".