Hi guys, my mate who biught my A4 has come to me for help with the wipers, they were a bit dog slow when I had it, but it hasn't been used every day so they've started getting worse and now stop in the middle, looks like a safety cut-out on them, then tehywill eventually crawl to a park. Is it worth trying to free the mechanism up (no garage to work in) or should we look for a new mechanism? i saw someone quote about £50 for one from Audi. Does anyone know from experience? Cheers.