Hello have the sufu used, but unfortunately found nothing that helps me further. I changed the brake blocks with my traveler 1.8 back.I still have the old ones on it.Out of ignorance I only tried to press the piston until I have noticed you also have to turn it, so the piston completely turned in blocks changed, and since the rear left only the brake is always hot. when I take the car I can turn the wheel but, but is a easier to remember . the question is losing worn out brake discs your unbalance which actually push back the blocks something? or could the brake rope lever not go back completely, is there a marking at which you can see where this lever is on the saddle at the end stop? guides for the blocks are all clean and greased. I think if the piston was tight you can not push it back, so I think this must be another problem. do you have any suggestions? thank you already i M forward