My wipers have an intermitent fault which starts with them inching across the windscreen and then stopping and not working for a period of time. Come back the next day and they work again! Have had a new motor (under guarantee) and have had the linkages etc stripped down, checked, greased and put back together. It still does it a couple of times a week. Have read through the extensive info on this fault and still stuck! Any ideas anyone before i have to bite the bullet and take it to a main dealer? Its a 1999 TDi.