Funny enough my Rollergames just started having the same problem (about 60 to 70% of the time). Did a Switch Test and a Switch Edge test and everything seems fine (shooter lane switch and all three trough switches are coming up fine), and when I start my Rollergames it doesn't tell me to go in testing mode (like it did when I had another issue with one of my SKATE targets not working). I have three balls in the machine (and swapped them out as well, but that didn't make a difference). So far it only seems to happen when all three balls as in the trough (meaning that once I lock one ball it doesn't kick out the two remaining balls). It kicks out a ball and then like a second or two later it kicks out another. I tried re-seating the wire connector like epeabs did), but no change. Any ideas? Thanks.