Quoted from CaptainNeo:just because it's restored doesn't mean it's dialed in and playing perfect. You would be surprised how many nice games i've seen that play like shit, because the person setting it up or putting it back together doesn't know the fine are of fine tuning a game. Takes a lot of time to adjust rails, ramps and everything else to make sure shots are smooth.
Hmmm I wonder if there's a thread showing the fine art of dialling in a pin?