I have a 1997 A8 4.2 Quattro and have a problem. When I corner there is water that drips - or pours - on my feet. It has to be condensation in or on the vents. It is really xxxx me off! I took it into a non-audi dealer, they said they though they were able to unplug the drain line, although my wife said it happened again! Any ideas? Someone told me it may be a heater box? What is the downside of not doing anything. It appears much better since the repair but still may be an issue. Arne Paul.