The chrome sleeve won't budge.I thought I could just leave it and remove the entire valve. When I removed the two screws holding the actual valve to the part in the wall the valve won't come off in fact doesn't budge?? I think its Kohler as that is what the trim pieces say. I bought the Kohler valve replacement and it looks like it will fit perfect if I can get the old valve off.I have pictures in the pictures you will see a c-ring but I have removed that after the pictures were taken.https://www.askmehelpdesk.com/webkit-fake-url://158BAFA0-4CE0-42D6-9A71-A9F98DABB3A1/IMG_2113_zpsc9a317d7.jpg.html.jpg