Found several bugs in Creature: Flipper was getting weak due to the wrong bulb installed for the hologram and drooping the 12v supply (took us two hours to find), the up-kicker had a broken coil winding and several posts and screws worked loose(the wood in the later Williams machines seem soft)
Jurassic park had a stuck open end of stroke switch, so the left flipper was dead.
Fixed a loose ramp and feature lights on Party Monsters.
Chexx survived 6 days without getting destroyed by the brats(if anyone here cares

)