Hi. I have a Vado summit bath tap with hand diverter. Recently the diverter stopped working and after liaising with Vado, I managed to remove it. When I removed it , it appeared that the O ring had come off the diverter and when placed back , it works fine. My question is that please can someone tell me where I can buy this specific O ring. Vado told me to buy a whole new diverter, as they do not have spare O rings. Pictures attached. Any advice would be greatly appreciated. Thanks