Driving behaviour / steering geometry

Hi, I’m trying here. Hope there are some professionals with regard to driving behavior… I have a Tiguan 2 (2018, BiTDI, AWD, R-Line) and find the driving behavior better/harmonious. Especially the straight-out run seems unstable. In other words, it pushes back and forth, but so minimal that it is not noticeable in the steering wheel. (However, the steering wheel of the Tiguan also reacts very reluctantly in the middle position, that easy back and forth does not show any reaction – what la ut VW is supposed to be like this).And the car moves very quickly e.g. with Gulli lids etc. What I have done so far or had it done: – Steering geometry several times (up to precise specification VW) – Have everything checked for play – Exchanged wheels, tried with summer and winter wheels – Reset DCC – Mount springs from H&R Now I wonder if I could possibly get something out with other values regarding track/sturt or rerun ev. than the specified ones of VW? , if possible, the steering react a bit “straffer” as this is very smooth? Does anyone even know an address in Switzerland (or southern German area) that really (!) have a clue?