I can also say that I've had numerous Gottlieb System 3 games and haven't had much if any trouble at all. In fact I've never had anything go wrong with one of my system 3 games. I have had however some system 3 games I've purchased with issues I've had to fix. But nothing out of the ordinary that's for sure. Currently I have a Gottlieb Operation Thunder system 3 game and love it!