Alan, the reason that they are a two man lift is because the devils have no lifting point, dynamo bolts, tapped hole, only smooth surfaces that when oily are like a bar of soap and knife edges on their ways! i am away from it at the moment, pics next Wednesday.
On a general note, I am using a one tonne trailer ratchet winch (OK so its overkill, but a tenner at a car jumble !). The problem is manoeuvring it the last few mm, that ratchet is too coarse.
Frank