Indeed it is , one of them! The pin protruding from the knuckle is the one with no P/N, which is a pain since the circlip groove has become worn/chipped. This one has and for the pin to unscrew and yet be non-replaceable is annoying. I have got a Chorus pin that has a flange on the end avoiding the use of a circlip. Same length but for some reason they made it about 1mm fatter. Hence Plan B to enlarge the hole. I intended buying a reaming bit for my drill but the tools shop offered me a cobalt drill bit instead. May try it today, unless someone says "No way you must ream it"?