Blender activation switch - Cup Mode

When using the blender with a single cup on it, more in the style of the nutribullet.

You screw the blades on and lock it in place and in doing so it pushes down 4 plastic pieces. Not all are connected but one of those that is connected has been bashed too many times and is collapsing.
Is there a way to replace this? Or will I need to try and "build up" the top of the button?