Parking windshield wipers

Is the spring inside the plastic cam supposed to move on the shaft.. Mine does, I don't thinlk I have an option on where to install the arm...
Even if i turn it on and off again, it goes to the same spot..

If I move my arm on the shaft, it will just bang on the bottom of the window

I think I will explore it somemore tonight..

DRENO... east kildonan... might hit the Selkirk show Sunday or at least
Tavern on regent Sunday night