Likely broke keys. The stamped ones suck. In your pic, they are the ones on the far right on the bottoom row.
The good stuff is on the top row. But!!!!!! Use the OEM type nylon pads (bottom row - left and middle) and the billet keys (top row - far right). The brass pads cause too much wear on the hard parts. The nylon pads are cheaper to replace than parts they are protecting. The brass pads will wear those parts and cost you more money in the long run.