Fitted the brake stiffening bushes and the RS3 vents:
first get the old rubber out:
A - still one rubber
B - removed rubber (C)
then little grinding to remove rust (and after this protect the surface with antiseize):
both bronze bushes in place:
After one week or so I will be able to report how the brake feels.
As I had things apart I fitted the RS3 as well:
Removed the guards also. Hell the caliper mounts were hard to loosen !!
(needed to unbolt them to remove the splash guard - these have to be
tightened with 190 Nm)