Cadillac Deville 98 suspension front board hard

Hello guys, so I drive a Deville Bauj. 1998 standard version. At the Cadi the shock absorbers (conventional suspension) were so slow. So since car checked from below times and ordered at Rockauto ne list shock absorbers rear (Arnott) with autom. level compensation suspension springs pendulum supports rear crossbar rear The rest of the rear axle was OK front axle almost the same spring legs front (Arnott) suspension springs pendulum support crossbars Since I am currently a little under stress I had all the parts installed in a workshop. When I picked up the vehicle I noticed that the Cadi is generally a little higher. Then I drove home and I thought I was hit, the whole front car is Bretthart jumps and dances around like stupid. Arrived at home and then looked at what’s going on. quite tight in the front, but still licks down and springs after… The left side can hardly be pushed down at all. Now my question is possibly the new shock absorber defective ? or did the workshop do something wrong during installation.. At first glance everything looks good, springs sit perfectly etc. Has one of you ever had such a thing. Greeting Ralf from Wiesbaden