I had a similar problem with WoZ, the rescue ramp that leads to the right flipper had the guide going on the sling plastic and launching the balls to the outlanes. The tech we told after the game just kinda shrugged it off even though all 4 players had lost a ball this way. None of the players in our group really made a big enough deal about it, we all just shrugged it off at that point too.
Liked: Heavy Metal Meltdown. Those riffin' guitar solos, man. I also locked 4 balls and drained and had someone 'steal' my multiball on ball 2 and I came back and did it to another player on ball 3 for the win!
Disliked: Vegas. Vegas' rules are so dumb that it led to left orbit to right flipper over and over. I hit the scoop accidentally and doubled my score somehow for the win. Bad tournament game.