I have the Williams Space Shuttle and the problem I have is with the outhole microswitch (I think that's what it is called). It is the piece that registers that a ball has ended. It is a switch with a half loop at the end that triggers the metal piece to reset the ball and continue to the next. The problem is when the ball drains, the ball just sits on top of this half loop and the game does not recognize the ball has drained and you cannot continue. I have to turn the game off and on and the mechanism resets. Also, during gameplay, the machine will switch to the second player even though player 1 is still playing. Do I need to replace that switch and if so, does anyone know what part number it is? Thanks for your help.