Well, the same people manufactured the Bill Baileys, all the other Compounds and all the simple engines too, and the same people maintained and overhauled them, so presumably all to the same standards. But each design is unique in itself. Unfortunately, this thread has followed to pattern of all discussions of Frank Webb and is concentrating on his compounds, and I must admit to being just as guilty as everyone else. In practice, loco design was only a small part of his remit, and Compounds formed only a small part of his design work. His enlargement and reorganisation of Crewe works, his introduction of steel making, his responsibility for repairs, his involvement in signalling, the many patents he took out, his involvement in the local government of the town, his laying out of a municipal park and provision of an orphanage, while some have been briefly mentioned, have been subverted by a few hundred Compound locomotives.