I have a 1971 Raleigh super course. I want to change out the rear derailleur because the pulleys are wore. I don't want to buy a used derailleur from eBay. I have bought two derailleurs; one was damaged in the mail, and never receive the other. I was wondering if I can buy a new derailleur with a hanger. My lbs can order cheap ones, but says they don't last long. Does anyone know if a good derailleur with a hanger is still made.