I finally was able to find a good looking Data East Star Wars and it plays well and R2D2 bops up and down, but R2D2 and the Death Star don't rotate most of the time. Sometimes once in 5 plays I see both of them moving for a second during play and then they stop. I have checked the voltage going to the relays under the play field and that is about 30V. Unplugged and replugged all connectors. All wires look clean, shaking the machine or touching the wires don't make them rotate.
I am close to giving up, any ideas?