Hi there! If you can send over a private message with your VIN and dealership info, I'd be happy to check things out on my end.My Lariat does it on the right side when wipers are all the way to the right. Passenger side. Not always. It sometimes seems to not go down enough on the down sweep and it will also sometimes turn off an inch or so from total retraction. I think it is the blade on the clacking noise but not going down all the way may indicate a different problem??
EDIT: 5K miles, no other problem so not whining much!!!