I did a maintenance wash on 95C and there was a water under machine. As it sits under the worktop, I pulled it out, and removed a back cover. The leak was coming from the back of the drum (bearings ?). After repeated wash at 60C or 40C it did not leak. Why would it leak just on 95C. Is it because of the expanding drum and rest when it is hot? What should I do? Many thanks!