I had the workshop install it professionally.Does your spring have the little clear piece of rubber around it? Try shimmy-ing it up all the way so it makes a bit of contact with the mount, that fixed the creaking for me since I believe it slightly binds up at that point, having that bit of rubber cushion prevents that.
Looking at the photos before installation appears to have the clear rubber.
Might bite the bullet and install some Audi bearings on the right side and get the rubber cover pushed all the way up.