Just replace the rings for new ones. £35.25+vat each from here http://www.reluctorrings.com/cars/renault
Only thing I'd say is that they are fitted by heating them up so they glow red and therefore it may damage a powder coated finish on the driveshaft.
Only thing I'd say is that they are fitted by heating them up so they glow red and therefore it may damage a powder coated finish on the driveshaft.