Having developed a mysterious water leak which gave the noise of water rushing around behind the glovebox when turning left, removed the wipers and plastic trim.
Removed a stack of leaves and accumulated crap, and cleaned the channel that the plastic trim sits in, as some parts weren't sitting flush with the windscreen. Some water sat in the intake under the pollen filter, which was what I could hear sloshing around, so removed that.
Unless they're all like it, looks like someone at Audi has cut into the plastic trim to allow it to flap up for changing the pollen filter. Have now ghetto'd its with some duct tape, so it's at least watertight again.
Will buy new plastic trim and pollen filter and replace.
Snow foam and washed once all back together.
Still driving nice with B5 tip.
Still considering B5 remap.
Still considering eibach springs and new dampers and poly bushes.