Can someone tell me what I’m missing here or if the tap has got some wrong or missing component (see photos). Usually these kind of taps have the ‘shoe’ attached to the tap itself, the washer fits on the underside of this and then that is secured to the sink. In this tap the shoe is separate. The washer fits in the underside of the shoe as normal, but the tap doesn’t fit through the shoe, nor is there a washer to fit between the tap body and the shoe. Surely you don’t just balance the tap body on top of this shoe as there is then no seal and water would just get through. What am I missing?!