Mandatory rule with this title is to familiarize yourself with the ruleset and play the game you wish to purchase. As Matt said, there are a lot of optos and the game gets "confused" when things are not right. Watch out for broken ramps and protectors installed over broken ramps. This is a shortcut taken by many, so if there's one shortcut, there will be more. Check the diverter subway ramp. No use in cleaning the playfield if this ramp is not 100% clean and working. The teal inserts are usually a problem, these need to be checked and I think from a cosmetic point of view, if these are no good, the game looks bad. Lockdown bar - Watch out for bad welds or rivets. The lock down bars are not replaceable - so keep that in mind. This is not a deal breaker, but it should be highlighted by the seller.