Was there much body filler applied at the factory?
If you watch this film of the production process in the 80's you'll see lead being applied to a new 328 shell at 5:08 [ame]http://www.youtube.com/watch?v=i9n89HkZEaQ&feature=player_embedded[/ame]
An amazing amount. When my car came back from the media blaster I asked him if he had changed to a more aggresive medium, but it was just the lead. Remember that Ferrari had never produced this quantity of cars before and the Dino was putting out up to four per day.