I have a 92 500 SEL that had vibration problems since new, MB tried everything drive shaft, upper bushings, rotating tires, re-aligning. These cars were prone to vibrate at 45, some did others did not. I finally replaced motor mounts, tires (Frestone Torenzas) with road force balancing , lower control arm bushings, sway bar bushings, and steering damper, plus alignment. I dont know exactly what fixed it but it is gone.
If MB aligned the car and the wheel is off center make them fix it, it has to be done with tie rod ajustments, the steering wheel can not be indexed. They probably could not free up one side, and decided to make the ajustment on the other, MB has a strict set uf proceedures to align, including a spreader bar between the wheels. Having been wrecked could add to the confusion.