If you have any old Suntour derailleurs try the pulleys from one of them. I have a Prestige on a bike I just got and half the teeth were missing off the pulleys. The Suntour pulleys fit perfect and I mounted them with name facing away in case anyone actually looks that close! Of course if Harris has the correct pulleys and this a nice derailleur maybe that's the way to go. http://www.sheldonbrown.com/harris/french.html#derailers Or find a not so nice derailleur at a flea market for parts.