After having the MPU main board off to install a new Z6 IC i now notice my high score does not remain and flash , i only get the most recent score and its in player one display, if i remember correctly high score flashed in all 4 player displays. i have a remote battery pac 3 triple aa batteries all new, and a charging, blocking diode. i have not tried to run the bookkeeping "white switch in coin door" thank you Phil

update, I ran the white book keeping switch and zeroed out replay and high scores,, high score now operates correctly retaining the highest score.. thx Phil