83 308 QV suspension question

I just rebuilt my suspension. New A arm bushings, drop link bushings, new Koni shocks, steering rack, tie rod ends, Conti Extreme contact tires, Superformance wheels, the works.

When I hit a bump the steering wheel shudders a little and I have noticed tramlining on grooved pavement.

The tramlining may be due to the Contis but what about the shudder?

I used grey rubber bushings on the steering rack thinking they might be better than the original pencil eraser red rubber original ones. The drop link bushings are new but black. I left the Konis at the setting out of the box.

Any guidance from all the experts out there would be appreciated.

 

yes, ball joints new and tight. The steering rack is new not rebuilt from car steering experts. Steering is tight but just shudders a bit when I hit a hole or large bump.