Quote Originally Posted by Lucas_R View Post
Have you used a razor blade to scrape the window of any fallout/overspray, then clay bared it, then glass polish. Do this and id be very surprised if it didnt fix the issue.

There must be something on the windscreen causing the wipers to skip/shudder.
Agreed with this! I've had trouble with hard water stains almost since new, which is causing the wipers to operate loudly and smear. Glass polish is helping but is such a pain to do by hand, sigh! Any tips for a fine wool or felt-type handdrill attachment possibly? Prefer not to buy a separate buffing machine but maybe that is the only way forward.