Quoted from Peruman:) The game would then play even if there are zero credits showing, so when I hit the Replay Button, the Subtract Replay Unit coil will energize and start the game sequence. Since the Replay Unit would be at the "zero" position, is it bad for the coil to keep firing when the stepper wheel is not going to move? Will this damage the coil?
Not going to damage the coil. It's only going to try and step once, just like regular.
Quoted from Peruman:2) When you hit the "Special" on this game you win extra credits. Will the game still be able to add and subtract credits from the Replay Unit with the Zero Position Switch shorted? I think so, but just need to double check with this forum.
Yup, there's no difference to normal at all except when it's on zero, you can still start the game. You can put coins in, win replays, specials, etc. and still try to pin the meter.