I have a 2011 +4 on which the windscreen wipers never swept the screen cleanly. So I recently changed them to cut-down Holden 10" blades and this was some improvement. What I now get is a perfectly swept screen when the blades are moving left to right (from the drivers point of view) and vibration, smears and waterdrops left behind when the blades move right to left. All three blades are affected. Degreasing the screen and blades has made no difference. Has anyone got any idea how to fix this?
