When trying to connect a new toilet to the soil pipe connection it appears that the toilet is lower than the loutlet. I have tried fitting a flexible hose but this does not work as every time you flush the water drips out and floods the bathroom. Itg has been suggested I fit a plinth. We are only talking about 15mm difference at most. An offset joint does not work eithere as it is not long enough to join up to soil pipe outlet. Suggestions welcome please,