If one has reason to believe that the lens may be defective or not working according to specs, I'd certainly contact Fujifilm support for assistance and possibly mail it in for servicing or a replacement. Or go to a local dealer and compare different samples.
I picked up my 90 this week. The movement of the magnets is there when not mounted, as most people have noticed. No clicking or anything out of the ordinary. In my opinion, using the 90mm has the same feel as the Canon 135L. The AF snaps into focus, very quickly.