I am trying to install a pair of these currently. For the last step, the ends of the struts with the ball socket just won't go on the stud. I measured stud...it's 10mm diameter, and I measured inside of ball socket...also 10.? mm. I've pushed on them, pushed harder, taped with a wooden mallet, and then with a small hammer...they just won't go on.
I see a wire (as opposed to a clip as strong-arm shows in an installation video) that is clearly a retainer. Does this need to be removed to install? I am hesitant to do it unless it's normal to do so as it then would need to be replaced which could be a challenge.