Hey guys, I've recently replaced my toilet, the new one has a waste pipe slightly lower than the previous. I used a flexible connector and although the waste has to go uphill slightly the toilet clears. I noticed a day after however that the wall to one side of where the soil pipe enters the wall is damp. I removed the toilet and it seems a bit of waste remains in the waste pipe/soil pipe connector, looking down the soil pipe there appears to be a join about 20cms in to the pipe. Do you know of a way to seal this joint internally to stop any leakage in to the wall? The joint occurs within the wall so I cannot seal it externally. Cheers for any help guys!