So my new Koolstop pads came for the Weinmann 605 brakes on my PKN10. It is clear they pads want/need to be slid into the 605 cartridge. Of course both ends have a tab bent over and they don't use a screw to lock pads like new models. Before I start jimmying the tabs with a screwdriver and pliers, am I missing the easy way to swap these?