Sway Bar

Purchase and installed a new Pro Choice WD Hitch today. Everything was pretty straight forward and fairly simple to install, but I have a question about the sway bar. This is my first experience with a sway bar so I'm a little worried about how loose it seems when installed. when the sway bar is installed and tightened up I am getting a lot of side to side movement. The front to back movement is fine when tightened up. It almost seems like the mounting point for the sway bar is to large for the ball that is installed on hitch and trailer tongue. If any of this makes sense to you guys could ya lemme know if this is normal or not. Just wanna reaffirm that there is no front or back movement when sway bar is engauged so I'm comfortable there. Just worried about left to right movement. Thanks