I just bought a game and I was hoping someone can help me a technical issue. The multi ball isn't working on Independence day. You shoot it it opens up and then you shoot it into the hole and nothing happens. It's not registering. then it takes a few minutes and the machine does the it can't find the ball mode and then kicks the balls out. Any reason this is happening and what can be done. Trouble shooting. I'm not handy when it comes to pinball machines. Please help. Thanks. Rick.