I bought a car that had been moderately wrecked and fixed, anyway the windshield is new. Before I bought it the wipers didn't work because the arms weren't securely fastened to the motors. So the dealer just tightened them down, no big deal, but now only about half the blade actually moves any water. It isn't a problem driving normally, only when turning into parking lots and such, and it's a little difficult to see the lines on the road sometimes.
So should I try to tighten the arms more, or is there some other way to adjust them? The blades are new, I've already replaced those. Thanks.