Whoops -- DIdn't look at the date of this post, so I don't know if this is still an issue. But, yeah, I didn't like how loose-fitting the cup was on the Kirban, either. It fit much more snuggly on the ball of the Ripper. I threw some grease on the ball prior to jamming the cup on just anyway. No perceived rattles or anything.BrianK said:Just to be clear.. It took a Lot of force to snap it on. It was only after installation that it was 'sloppy'.