I did a really stupid thing today. I was clearing all the leaf debris from the gutters and drains on my S5 and to get better access I raised the bonnet and pulled the drivers side wiper arm away from the windscreen. The job went well and i happily closed the bonnet forgeting that i hadn't moved the wiper arm back . You guessed it, i bent the wiper arm at the base nearest to the spindle. Luckily it looks like the cast part of the arm is designed to bend rather than the bonnet, i now need a new wiper arm. .