Good morning chris
it came with 4 o rings, one was fitted to the shower head, the rest i take it were spares, as the outlet is quick release, the water was running out of the bottom, near the back, no sign off any water from the front.
the seller asked me if the leaking water was hot or cold, i said why, was there any history i should know about, obviously he said no but my answer would narrow the cause down.
its a pain really, means i cant get on with the kitchen until the new unit is returned.
catch you later