I have been told by a power steering specialist in perth that the power steering pump bearing is noisy, it's working fine and to either put up with it (no way) or buy a new one, which brings me to the next question,
Is there a bearing kit for the PS pump unit?
Is there a refurbishment kit with bearings and seals for a PS unit?

I have three sw's, they all have PS noise, each slightly different. Only really notice it at carpark speeds. Get used to it or spend up, you'll still be able to hear it I bet.