I have never seen my 2X Blackout flasher on the the play field ever light up. The manual says there are 2 flashers in the back box and 1 in the play field. It may be as easy as replacing the 906 lamps but I would like to know from all you JD owners when this flasher in both the play field and back box should be flashing. Is it only in Blackout mode? Do you have to do something special in Blackout mode to get these flashers on? Any info would be greatly appreciated. Thanks!