Wrightpayne and Eriedor thank you for the links, appreciated! 7Wonders and Ecr, in the absence of an old first motion shaft would something like https://www.amazon.com/Dorman-HELP-14503-Clutch-Alignment/dp/B000C5C74K work the same way? If so, can someone let me know the number of splines, the OD of the splines and the OD of the pin that goes into the spigot (??) bearing in the end of the crank? Failing that does anyone have a spare 1st motion shaft laying around that I can purchase? Cheers