In the pics you have of the uppers, it looks like the arm in the first pic is longer than the other. I know that you can set preload and all by doing that, but one upper being longer than the other would move the rear end to one side, and it looks like it is causing the arm in the second pic to bind.
Ohh, and the rear doesnt move side to side due to the angles of the uppers. In order for it to move side to side, one of the oppisite side arms would have to come loose.
I predict future happiness for Americans if they can prevent the government from wasting the labors of the people under the pretense of taking care of them. -