I have a >40 year old house in Southern California with original faucets and hardware in one of the bathrooms. It is a bath/shower setup with a 3 handles - Hot, Cold, Diverter. The diverter has recently become stuck leaving it in shower only mode. I have read that most of these are easy to remove and replace, but I cannot figure out how to remove the diverter. Can you help? There are no markings on the faucets to let me know the manufacturer so I have included some pictures. I have been perusing this site for quite a while and usually find answers to my questions, but not this time.