I've just bought new wiper blades for my Avensis as the old ones were starting to streak and smear badly with the recent rain. I got Bosch ones from Halfords. Although the downstroke on the wipers completely clears the screen of water, the upstoke on the driver side leaves a very slight smear near the middle third of the wiper. The smear clears on its own in a second or two but is noticeable. I suppose this could be dirt on the screen but I've tried cleaning it (not with glass cutter though which I may try next). Should new wipers produce perfectly clean wiping, or am I just expecting too much?
Thanks,
Ken