Someone is upset with a Stern pinball? Is this a first? From reading pinside, I got the impression they were rock solid, flawless, and built to the highest standards. All kidding aside, sell it and walk away. To be completely honest, every single pinball whether old or new is going to give you headaches over one thing or another. Pins need constant maintenance and fiddling. If those things annoy you that bad then you probably will not enjoy owning pins.