Front windshield wiper

[steveherman]

I have adjusted the front wiper a bunch of times.
It is never right.
It ALWAYS travels too far.
In both modes it travels too far.

So my question is does the motor travel in circles or does it go back and forth.

My feeling is that the motor goes back and forth and the stops in the motor are messed up.
But if the motor travels in circles then my guess it would be the wiper transmission.