corsa water leak drivers footwell?

Many Vauxhall corsa c and combo van owners complain about water in the drivers side footwell. This is caused by the brake servo plate seal. I have watched some of the videos on youtube and it shocks me the bad advice they give. The only way to do this job right is to remove the brake servo to get access to the plate. go to www.bettawindscreens.co.uk to see how the job is done right.