has same issues in pasenger footwell, it ws the black plastic trim to the exterior of the windscreen, its held on by sticky things, if you remoove it and put it back on, it breaks the seal and water gets in to channel, hence wet feet, found it with the hose trick, so, if anyone has wet feet, and had a new windscreen, i bput money on it its that, as the windscreen guy will not expect to reseal there, just a dab of silicone sorted it,, steve fae glasgow, v plate 2.3,