I was lucky enough to get hold of an old pro Principia Rex, I think it's circa 2001 looking at the Linda McCartney decals.
Sadly the old headset it came with was knackered so it needs replacing. However, looks like Principia had some of their own ideas about headset size standards and they decided to go with a rather unique size of 3.65 cm (I think) for the top and bottom cups...
Please can anyone help me with finding a headset of this size?
New to the forum so please be gentle... Any suggestions on where this should be posted would be great