I'd be very grateful if someone could tell me the correct way to fit the dust shroud for the Mk 2 rear brake caliper piston. Having fitted the rubber shroud to the piston, and wound in the piston with the correct tool, I find it's impossible to push the rubber shroud down into the caliper (the Haynes manual says do it that way). So I assume the rubber shroud has to be stretched over the piston, then fitted into the caliper body, then I must wind in the piston and lastly make sure the shroud is seated ok in the piston groove. Is this correct? Many thanks!