Changing timing belt and noisy hydraulics

[ccohen5]

So by mutual agreement, it is the safe and sensible thing to do even though
there is no time or mileage requirement in any of the documentation I have
on the Sport Quattro.  So:

Do I need the special tools 2084 and 2079 to do this assuming the engine is
configured like the RR series?  It would not seem so as the belt is
tensioned by moving the water pump, right?

Also, I have remarked that after replacing the HP hydraulic hose, I have
some noise at low speed from the pump. Some have said this is because the
replacement hoses are inferior to the Audi OEM.  While I agree this may be
possible, however on browsing the service bulletins from VW Tech, I noticed
that 46-88 says that this can occur because the belt is not tight enough.
They advise that after tightening the belt to normal tension, tighten it
some more!  They say this will not harm the pump and will reduce the noise.

Anyone had this experience?

Colin