Damien,
Any help I can give you regarding the Cleopatra pinball, let me know. System 1, I have lots of experiance "electroniclly" so if you have any electrical questions let me know if I can help.
Are you going to buy a new processor i.e pascal or Ni Wumph? Or are you going to look for an old board?
Good pick up by the way, I saw it at Mark's and it should clean up a treat. Im doing a Countdown from Mark that was in similar condition and it is coming up great.
Dean