Hello, I’m new here in the forum and also tried to find something on my topic, but I didn’t really find it. Maybe someone can help me. I drove on my Yamaha a partial synthetic oil, which had to follow a slide of the clutch. So the first tip was pure mineral oil rubbing disks/steel intermediate discs with acetone clean. That hadn’t worked out still a slide. Then new friction disks ordered TRW (steel discs had remained Mineral oil on it. but it still slips. Where is the error. It has run only 19000km. For your tips or suggestions I would be very grateful. P.S. Oil filter was changed each time.