The vibration is normal. It comes from extreme angle of the Universals, when combined with a spool. You can reduce vibration by removing the set screw that holds the pin in place in the universal and glue you retaining ring with a tiny drop of CA glue.
You should also try to shy away from ever running full lock on your car. Work on setting up your car a little more aggresively so that you can decrease steering lock helps reducing the vibration as well.
Ultimately, a lot of people end up either using a Gear diff in the front or getting some sort of Double Jointed/ True CVS Shafts if they really want to eliminate the in the front of their car.