A little bit of movement is really not unusual. That's how they were from the factory - sloppy. Today's better rubber compounds and wider tires don't help matters. A few well placed gussets will do a world of good for it. Even if the mount has broken loose, it's still no big deal.

It would be nice to have a spare K to tweak and then swap out, but it all would have to come out anyway, so just fix what you have.