Ok, neither of my two local plumbers merchants can help me identify a replacement button for this mechanism. There are no printed names on the button or mechanism. The button has lost one-half of its cover and the spring is very weak and gets stuck so it needs replacing. Tried a few bathroom spares websites but there are so many different push buttons. Couldn't see anything similar. Does anyone know the manufacturer's name or a name for this type of connection to a button so I could get a generic replacement? And a supplier would be a real bonus ! Thanks.