These guys are in Ireland and selling bushing kits to repair wiper linkages.
I bought a kit off them a few years back to repair the wiper linkage on a 2006 Q7. Only cost about €20 and easy to fit. They may never have seen a D2 wiper linkage though as A8’s are pretty rare over here. There can only be so many variations of an Audi wiper linkage though.
https://www.google.com/url?sa=t&rct=...-2_Y_XK5gY_iUX