I'm swapping out my wiper motor with a refurbished one. When I got the new one reinstalled I tested it. Motor worked fine, but the arm you attach to the wiper motor stem grabs the rubber cover under the when it rotates. I think the rubber cover is sitting to high so it's touching the arm. Anybody had that problem? Looks like it should be flush and shouldn't touch when you tighten the arm on but it is. Took it off and thought I'd see if anyone else had a suggestion for me.