Quoted from IdahoRealtor:Once a pin is properly dialed in it should be good-to-go for a while. It's not uncommon to go months, or even years, without having to do anything other than regular cleaning, replacing an occasional rubber band, replacing the batteries, replacing a bulb or two and maybe adjusting a leaf switch or two.
Speaking of batteries:
To the OP: REPLACE THE BATTERIES NOW! (if you haven't since acquiring the machine)
You don't know how long they've been in there, and damage from battery leakage is the #1 killer of pinball machine electronics.
Ronkonkoma, NY
London, ON
