Hi all. strange one i'm afraid, the wiper arm on the drivers side has started lifting off the screen when driving. only lifts off the lower 1/3 of the window screen covers the the rest and clears it normally. does anyone have any ideas or solutions as to why.
did wonder replacing the wipers with the ones with a spoiler on them so the wind would push them down on the screen, put i have my doubts if this would work.
any suggestions greatly appreciated. thanks.

There is a spring inside the arm.
Maybe it is broken, or worn...??