Hello, affected vehicle: Audi 80 T89, EZ 04/91, 90hp, PM engine. Since again a HU is at the TÜV I checked the brake force regulator today and the lever moved only minimally to not at all when the brake is operated. Normally the lever would have to move if someone is sitting in the car and operating the brake? I sprayed everything nicely with WD40 now, the lever can be moved easily with the hand, but as said only minimally when braking. Is that what you are looking for, or what is the normal condition? Another question. I found 2 variants here in the shop. Once at the “NK” there is “manufacturer restriction ate, aluminum” and at the other of Lucas “until year of construction 08.91, manufacturer restriction TEVES,” Where is the difference here? Thank you for your answers.