I was working on a Nascar Painting/Led's and so on. Got it done and fired it up to play it. Now, the ball when fired (shoot) just keeps going around the track again & again never entering the playing field. I went into the service menu and check both gates and tested them and they open just fine. Does anyone have a idea what else I should look at? All the red sensor's are lit up and working. So I am stumped.