Hi guys, Need some advice on tiling the corner of a shower enclosure that’s not totally square and so doesn’t fit flush to the tray. I replaced the bottom reactions of plasterboard/cement board earlier in the job and now the tray has gone back in I’ve found they’re not (and never were) square. Out by about 8mm at its widest on one side and flush the other, or slightly less than 8mm on both sides if I reposition the tray so it doesn’t sit flush on either wall. (See pics) What would be the best way to lose this gap and ensure a good seal all the way round the tray? I’m only tiling the bottom two tows of tiles ( each 25cm high) but probably have enough space with that to bring the edge of the last row of tiles out just enough to sit on the tray, is this doable just with thicker tile adhesive or do I need to float the wall with something before tiling? Alternatively I’d considered tiling flush to the walls as normal (which would bring thee edge of the tiles just behind the tray in the corner) but finishing with some sort of quadrant tile trim to ensure it sits on the tray and covers the gap. I have a Mapei tanking kit so had planned to seal the gap between the wall and tray with the waterproof joint tape onto the edge of the tray and fill the void beneath this with silicone. Does this make sense? Hope that’s clear, any advise appreciated.