What piece is the service manual telling me to discard and replace in this diagram? The top nut (W700212-S442)? The mount nut (W715846-S440)? Or just the mount plate+bearing? I plan to replace the mount and bearing anyway. Also, is there a right and left lower seat pad (8 in the diagram)? Or is the same part used on both sides? Every OE parts vendor I've checked only lists the one: CV1Z-5414-A.