The wipers have recently been making too wide of a sweep, resulting in a banging against the lower panel just below the windshield. The top end of the sweep is just about right. The over-wide sweep and banging occur pretty consistently now. I have not tackled the problem yet.
The problem seems to be instigated by the speed-sensitive wipers. Such an unnecessary feature--they go faster as you accelerate. It was resolved by replacing the windshield wiper linkage because there's a part of the linkage that gets worn out and allows excessive play in the wipers. I ordered the parts online and did it myself. I suspect it will eventually need to be done again if I keep the car long enough.
Wipers go to far in both directions, though it takes three wipes to hit the post, resets, and then starts the wandering again, same with the resting location at the hood.
luckily it does not rain often in Phoenix.