No, no and once again....no.
Judging from my own experience, these cars are not often fully cured. They are cured to BMWNA's satisfaction, which means if they "all behave like that" then BMWNA deems them "fixed".
Sophisto Grau / Oyster - Black Nappa, Anthracite Wood Gone but not forgotten.
Heaven is where the police are British, the cooks are French, the cars are German, the lovers are Italian and it is all organised by the Swiss.
Hell is where the police are German, the cooks are English, the cars are French, the lovers are Swiss, and it is all organised by the Italians