….should have made it clear that the money I spent included several extras: new oil seals in the saildrive propshaft assembly, new seacock in the raw water intake, making good corrosion, replacing various other bits and pieces (filters, anodes, raw water impeller, cleaning out the heat exchanger, pipework and so on). I guess the charge for replacing the saildrive diaphragm on its own would have been about £1000, maybe a bit less.

    Ian Culley