Report "Hi Guys. I hope you can help me. I am a guzzi fan and have recently purchased a v50iii 1982 model. It is in an ordinary state and I am working on it. I am no guru but try. I have taken off the rear brake disc for cleaning etc but I can not remember how to put it back exactly. It has a shape that is not flate and please tell me should the side of the disc that faces me after it is put back in sit flush or should the elevated bit face me. hard to explain"