The link below points to a picture I took of mine for a previous thread. As others have stated this is by design and the way it is supposed to be. I don't have a 2.75 inch model but have read they "fixed" the perceived problem by covering the ball up so nobody can see it.

BTW, I do clean my guns. If anyone disagrees let me take a picture of your gun with a 1:1 macro lens and we will see just how clean they really are.

SW 69 = failure