Good evening love community I had my chain changed for the first time before about 800km from my dealer of trust. The originals had 26500km on it. Now I am at almost 27400km and now have the following problem. From 400km with the new chain I suddenly had a very big noise from the region of Ritzel. I then also reported this to my dealer and I passed by him. The mechanic took the pinion and the chain down again, put everything together again, My dealer said that this is in the normal soundscape of an aftermarket chain and I don’t have to worry about it, because everything was set up optimally. I uploaded a private Youtube video, there you can hear the noise on a screwed-up motorcycle. It sounds like a hissing and the higher the aisle, the louder the noise gets. When driving it almost comes like an an ansau What do you think that could be? He said, if it gets louder he could order a pinion again, because it might be a factory error. I also read that the original pinion is rubberized and the aftermarket is no longer. I know a remote diagnosis is always difficult but maybe the one can help me maybe yet Video: https://www.youtube.com/watch?v=BMtqF7qBvT0 Thanks a lot in advance Gruss Fabio