I tried looking in the board's manual for any kind of an extra ball feature for the last ball of play, but couldn't find anything. I would think if it's a misadjusted switch it would happen more commonly, not just on the last ball. Your best bet would be to contact David via email at [email protected]. He's helped me out a couple times with tech support and he was great. BTW I love Pink Panther, one of my favorite Gottlieb SS games