I had an nos set done in the 80s, still look perfect, they were dipped in the open position. Chrome shop would not polish them unless they were disassembled, too many employees hurt he said. I just locked the chuck on my da and polished them till they looked like chrome with 320 white 3m paper. I think restorick rebuilds them, maybe he could have them done for you? It was $50 cash back then.