My driver side wiper always made squeaking noise, passenger o.k. So I replaced the rubber first, no improvement, then I replaced the wiper complete, no improvement. Then I remembered that for my old BMW there are exact instructions on the wiper arm angle like this http://www.e38.org/Checking.or.adjusting.contact.angle.of.wiper.arms.on.windshield.pdf 10 years ago I made an instruction how to make the adjustment on the BMW with a cheap school protractor http://www.bimmerboard.com/forums/posts/292534/ Unfortunately I do not have the exact angle for the Honda Acty, so I tried to make some adjustment and bent the arm a bit till the noise disappeared. Here is a instruction of a Japanese wiper manufacturer about problems with wipers and how to solve http://shopping.geocities.jp/juko-in/pdf/shop_buhin_green.pdf "When checking the wiper blades, don't forget to check the wiper arm as well. It will not be effective to change to any kind of wiper blade if the angle of the arm is not verticle to the front glass. Please check the arm angle carefully when exchanging the wiper blades." See drawing in the link. So basically: bring the wiper up to mid stroke on the windshield and examine the blade assembly. The blades should be making full contact on the windshield and the blade arms should be parallel to the glass. If the arm is bent, use some pliers to carefully twist it until it is parallel with the glass again. Do it trial and error till the problem is solved.