I've done a few. I hit the lock tab with a flap wheel and get it smooth. Clamp the main cap in a vise, locate the bearing, mark where the tab needs to be and make an indention with a center punch right over the notch for the tab. All it needs is a slight indention into the notch to keep it in place laterally. It doesn't need much at all. Some people don't even do that, because the bearing crush keeps the bearing in place. With the top bearing having a lock tab, how can either go anywhere?
