“Paul, I have an old motorbike that has not been used for a long time. It probably needs some maintenance. Can you take a look?” That is how the story on this 1982 Moto Guzzi 850 T3 Polizia started. The motorbike has been parked for several years. The oil stain on the cardboard under the carter indicated that there were issues to be expected. Still we assumed that just a regular maintenance job with oil changes and checks would do the trick. If the worst comes to the worst we could still switch to a plan B.