Does anyone out there have a spare pulley nut from a Ducellier Alternator. It seems to be unlike the common course metric one fitted to most alternators. It's a fine thread almost like UNF. This generator as once used on 2CV's has been replaced by a much larger item and is no longer available. I had to remove the nut so i could change the worn out pulley but it was so tight it riped the thread out.