I was driving 2 days ago in a light rain, maybe even had my wipers on intermittent but I can't remember, and I heard a WHAP, WHAP, WHAP every time the blade came back to the driver's side, as though the blade was 1/2" too long for its own good.

I pulled off to check to see what was wrong with it, I pulled and pushed the blade, thinking it had come forward too much but it seemed tight. I drove on and the problem seemed nearly magically fixed (though I don't think the blade budged at all when I played with it, maybe I did it some good), however it does hit the trim slightly on the right side.

Any suggestions? Is the wiper blade retracting shaft coming out a bit too much? I'm using a Rain X blade. I would have gone with a Bosch blade, but the blade that was supposed to fit from Advanced auto, didn't fit, and almost nobody carried the right blade so I went with the Rain X blade.

1991 300d 195k