Can't remember the last time I used a leg kit, prefer to make a frame from 3x2" topped off with 18mm ply glued and screwed, fix tray into a bed of rapidset, tile to front of plinth..
I try to get over it as best I can and try to get it on the deck. The Wirquin Shower waste helps. Usually it’s the McAlpine metal grid but the Wirquin is so thin it helps loads.