Crossbars and support joints exchanged = track adjusted / Stabi worry

Hello, with my Audi 80 – 89 PM without ABS, without servo, both crossbars and carrying joints were due. Now the steering wheel is crooked and the front wheels no longer cursed with the rear. I arrive at the axle measurement on Thursday and so I wonder if there is a method to adjust “grob” track and fall so that my new tires do not take advantage of each other. Another question, under the crossbar there is the Stabi pole with a thick rubber drum. On the old crossbar there was such a slightly curved bell which was inserted on one side of the crossbar in a notch and screwed on the other side. However, the new crossbar has this notch and therefore cannot use this clamp. Since Tüv is due, the question whether this has something against it if I use a proper “building market shell” made of metal, which at both ends has a screw and nut together. Unfortunately, is not original, but otherwise I don’t know to connect crossbars and Stabi with each other.