On my Lightweight, it looks like the short hose, from the tap on the block to the heater is starting to fail. This is the one with the double right-angle bend.
I shall be checking the usual suspects tonight, including the various
*dock websites. I could probably rig something with a piece of flexible hose, though the run is a bit short for that. Has anyone found a suitable "third-party" hose that will fit.
Either for another Rover model that's a bit more recent, or another manufacturer entirely.