Some people consider movement a little play when the cv is actually doing it's job. When I fixed the clicking in the cv, the axle nut was tight, but just not tight enough. Seriously, just pull your wheel and hub off (cotter pin and castle nut), regrease and tighten axle nut to aprox 80 ft lbs. While you're at it, check how tight your ball joints are. You might be surprised, because it seems to be working for the rest of us that thought we had bad cv's.