No TÜV

Good morning, we have two years ago a R850 with approx.55 tkm at the dealer. Since the purchase only 400 km were driven. (There were reasons why so little has been driven. Yesterday we wanted to let the machine new TÜV en. Unfortunately we did not get a TÜV. It was criticized: from the front wheel swings exits oil. The rear wheel has too much game. What could be defective on the rear wheel. Can one recreate something.?My question now, what do we have to expect if we have this repaired What are the chances of getting Kulanz to repair the rear wheel at the dealer. The questions come from the fact that we want to sell the krad. What else do you get for the krad, with the mistakes? I already thank you for constructive answers. Greeting dexal01