Robin
Really sorry to hear that, having been resurrected, Modestine has now shed her propellor shaft. I wonder whether a sound thrashing a la Basil Fawlty would help. The good news is that Lancia used standard Hardy Spicer couplings on the early cars, the company still operates as part of GKN in Birmingham, and Andy there is very helpful and can, or could until recently, supply companion flanges with the right keyway and taper off the shelf. And he may be able to help with the re-machining of the output shaft. A complete new shaft was made up for Arthur Keeling's Dilambda and Les will phone over the weekend to explain what was involved.
John