Suggestions. I have numerous American Standard shower fixtures. The diverter is a metal to metal. The replacement of the diverter stem with new, is limited in preventing bypass flow to the tub due to wear and tear on the seat. I do not believe that this is a removable seat fitting, but not positive. If not, is a tool available to rework seat area? Or a suggestion on an improvision to this situation. The stem portion that makes contact to the inner seat is beveled unlike the hot cold shut off . I do not know if the seat is concave to conform to the stem or if it originally was flat so I could use a standard seat grinding tool. I have 8 of these and other then this problem the hardware is sound and would be a nightmare to replace. Any clever tricks to grind this seat are welcome.
Thanks rob