Quoted from Magicmike0:Other issue I see is the multiball modes either kicks two balls out into shooter lane at times, or when it works properly it won’t kick the ball out of shooter lane into playfiled.
This sounds like it could be the shooter lane switch. Try cleaning and adjusting the switch. Drag a paper business card between the contacts to clean, then make sure the ball activates the switch when it's sitting in the shooter lane.