Hello, problem: some time ago (November was it still) came from behind right grinding noises while braking. I thought: “Clear case, seller shitted you, brake pads behind are not new, no matter.” So in the course of my bike storage surgery I put down the drums, last Friday (the grinding had disappeared for some 100 km, about 2 weeks was now quiet), result: The pads are top, let it be 20 %, which are down there (have directly factorynew beside content Okay. So I didn’t think about anything. Now the grinding noise just came back today, back right. Just like that. Only when braking, and the stronger you brake, the louder it gets (for the first time at least, I didn’t try full braking). What is it? What does it cost?