Quoted from LTG:Snug screws doesn't rule out adjusting the switch.
LTG : )
Agreed. The first time I saw the screws I really tightened them. Worked for one game and problem came back. I talked with my tech and he said to loosen them up a bit and make sure the switch (the part that the ball rolls over) wasn't too low and wasn't too high.
I'm pretty sure the problem is just adjusting that switch in proper position