Hello together, in advance…. the SuFu was used, but didn’t make me any smarter. I also got the phenomenon on my moose that it jerks and rubs when braking. As the first measure the crossbars were exchanged on both sides because they were over. Schwubs, old out and new in. The jerking actually became less. However, it is still clearly present in braking from high speeds. I now type that it is about the brake discs. One of the small countersunk head screws that hold the brake disc in position. I can’t detect any movement in the disc when the wheels are mounted, but very well when the wheel is dismantled. Is that normal? Can it be that the scratching comes from braking? I also have quite strange brake discs on it. They have a “ventilation groove”. Do you have that too or is it such a strange tuning part that no one needs? My previous owner had where Hl a little tuning spleen that I have been able to gradually rebuild so far. I also have the feeling that the tumbling occurs differently. Does anyone know what?