Moin in the round, I had the lowering (coupling bars) rebuilt against the originals. I have to say that the thickness was never really “turned” with coupling rods. Unfortunately, the thickness has been standing since the conversion into wedge shape (back = high 50 cm) , front = down 39 cm) (measured wheel center to Koti). Unfortunately, there is no more spring in the back and the error in the STG is “rule not learned”. I look into the STG when reading out the access code that the values (407, 401) “excluded” n”. According to my logic, I would have to enter the really measured values over the 4 channels and correct them over and over again or ? I find many instructions as to how to lower the thickness but unfortunately not how to reset it back to normal. Can anyone help? Thank you, PS: VCDS is available.