2009 A4 Avant steering rack

[Nick Lawrence]

Hello group,
Haven't had to do Audi's for a couple years but now I'm back.
Subject is 2009 A4 Avant.    A power steering leak came on quickly, and 
it will drain the reservoir in +/-30 miles.   I'll get under it tonight 
to try and determine the leak location.  It comes down on the passenger 
(right) side of the car.
So if it is the rack, has anyone any experience with buying 
reconditioned racks and a source?
Any advice on the R+R operation?      I've done a few Type 44's in the past.
Nick  central Ohio