Congratulations on finding your bike.. unfortunately can't help you with parts but surely if the police are involved already the 'seller' should cough up the rest of his loot, he's basically been caught red handed.
Unfortunately, the theft attempt happened in France. The police caught three people, but it's quite unlikely I'll get anything. They're only charged for reselling the bike, they might be insolvent, and even if they have the money I'm not sure they'll reimburse me easily.
Congratulations on finding your bike.. unfortunately can't help you with parts but surely if the police are involved already the 'seller' should cough up the rest of his loot, he's basically been caught red handed.