Quoted from Yoderboy:My machines shooter lane sensors will occasionally act goofy and have false readings. When this happens it gives you credit for the phantom sensor register and auto plunges the ball killing your skill shot. Would it be feasible to change the logic so that the lower switch the ball rests on would have to be open before a shooter lane sensor can register, minimizing issues from any false sensor registers?
Recalibrate the sensors in the settings. You can also reboot the machine, it does the sensor calibration during startup.