Have a friends flash in and I have everything working except when I start a game and the ball drains it completely ends the game to game over. if I play a 4p game it works until p4 drains then it goes game over. I checked function 31 and it's was set to 1, so I set to 3, but cthe problem is still there. go into switch test and all switches read fine including outhole. swapped in a all in one board and it does the same so looking for any ideas on what to look at. thanks