Recently found water entering the tailgate area at the corners where the radius is tightest, top and bottom both sides. On careful looking it seemed that the seal had been stretched round the corners causing the upper part of the seal to break away from the metal lip. To my knowledge this seal has never been removed from new (T6 2018). Removed the seal and replaced making sure the corners were not stretched. Result, no leaks no matter how much water I flood over the back. However, now the two ends of the seal no longer meet. There is a 3 cm gap. Wondered if anyone else had come across this? I am either going to have to live with the gap, try and fill it with a flexible mastic or purchase a new seal - I anticipate the last option.