Err the other thing is the CVD is not a a true CV reppza joint, so the greater the angle you turn the steering wheels the greater velocity change happens thus cause vibration.. thus the wheel wobbles. it does it when it striaght the wheels will probably be out of true.
more info here.....
http://en.wikipedia.org/wiki/Universal_joint
If you you a spool you will hear the out drives chatter because of this.