Searched the newsgroups but no luck on this one, nor in the Haynes Manual: If the wiper is not covering as much of the driver side windscreen as you would like, leaving say a 1.5" uncleaned margin, how to adjust? Or are Vectra owners just stuck with this? Obviously if you make the margin too narrow, the fast wiper speed will have the wiper slapping the windscreen edge.
Cheers - Nigel