Axle Problem

I just replaced my drivers side axle (cv joint was clicking), and now my car vibrates at highway speeds when when turning right. I am pretty sure I seated the axle correctly…could it be a bad axle? I heard that turning the axle 90 degrees and reinstalling may help? I got a new axle (Empi brand). Any suggestions? Thanks.

I forgot to mention, it is a '90 Nissan Maxima

Fwiw, EMPI is not a brand known for quality. In the vintage VW world, that brand is avoided like the plague.
Did the old shaft have a harmonic balancer in place, by chance? It may look like a thick hockey puck that is placed along the shaft.