Recently my four-year-old daughter was first on the car and hung on the rear windscreen wiper of our Honda Stream. Since then it doesn’t work. I tried to unscrew it, but I don’t get so far: When cover and screw are removed, everything is so tight that I don’t get it nudged. I’ve already used so much force that I was afraid of damage. What can be broken here and how do I go? The engine obviously gets electricity. Sometimes it wipes about a e quarter turn. The whole rod is attacked by rust and I wanted to put it on trial…maybe the current non-function is not my daughter’s fault after all. Lieb Gruss Oli