The problem with the corrado wipers is the return spring on the wiper arm is not tensioned enough , so the wiper does'nt press onto the windscreen hence lifting at speed.
The lupo ones prob have alot stronger spring holding them down onto the windscreen and the wiper blades look to have some kind of tension as well , (looking at the pic i last posted) .
You can set the wiper to any position you like , the pass side one in the pic needs to come down slightly to look better .