If this works and with me at the helm, there's no guarantee, there should be three pictures of the dodgy top yoke. Blasting has cleaned of the paint but some of the putty used to hide the damage under a layer of paint, together with the roll pins, can still be seen. I bought the one Eric identified on E-Bay USA earlier today for about £200. Apparently, the seller is known on the US site and is okay, so I'm hopeful. There again the bike seller was 100% on e-bay but thankfully, I've never seen him on this forum. The one I bought is supposed to be from a 1971 bike, which would be a K1 but although it's definitely the same as mine, I thought that the K1 had the first if the metal clock cases, with a different/later top yoke. Anybody want to buy a stylish paperweight?