The lift rod that came with my faucet is broken (the threads where the finial screws on are broke off and inside the finial). I need a replacement lift rod for Delta Model 538-CZMPU-DST Lahara, single lever, center set, bathroom sink faucet in Champagne Bronze. I have scoured the Internet and can't find one. The manual lists this part as RP54971 CZ. BUT the bag it was in has a number on it 60420cz. Neither of these seem available? It is about 10 1/4" long (with the finial#; about 9 3/4" long #without the finial) and the pole is about 3/16" wide. All I really need is the threaded pole. Can you help me find this?