Lever, hose and pistons. ha ha. I've never had one so can't comment. But if my common sence is any good then I'd say that because the brakes are just getting filled up with water straight away (as far as I know they come empty) then the seals arnt lubed up with the oil they need to keep air/water tight. If I were you I'd try bleeding it with mineral oil of some kind to lube everything up then try again with water. This is all speculation on my part though.