Hey guys I have a 04 A4 1.8T. The PS pressure line from the pump to rack was just replaced. The wrong fluid was added and I now have a good whine. I flushed the system with the right fluid and its still there. Also, When I turn the wheel from lock to lock it seems like it will turn a little bit further and when the steering wheel is back to neutral its no longer centered. If I turn it the other way "past lock" I can get it to recenter or come back to normal. Is that a bad rack?