hi, I'm replacing my ensuite. The old ensuite toilet sometimes smelt a bit, but put this down to age. It fills and flushes perfectly fine and doesnt block up. We removed the toilet and the soil pipe is horrizontal; there is no fall at all (its perfectly level). The fitters say if I leave it like this, the new toilet will begin to smell as theere isnt enough fall. They have suggested raising the floor under the toilet by 20mm but this in a small ensuite will be a hazard and look horrible. Soil pipe is 0.6m long, so using the calculations for 1:40 drop (Fall = Gradient x Distance - 0.025 x 0.6 = 0.015) which I think is 15mm? This is a really small amount to raise the toilet, is there any way to raise the toilet without raising the floor (not a plastic plinth, they are horrid).