Best way to remove steering coupler pin

Thanks for the reply
I did not hit anything, it happened while driving. Everything is tight, rod ends, idler and pitman. The upper A arm bolts I marked and they did not move.
The coupler was re-built correctly. Moving the steering wheel, in both direction, a little the suspension moves. I am to the point that I think it is the box. It was re-built so I am wondering if something was missed.
When I aligned it last time it took over 1 1/2 hours. We would do one side, then the other, go back to the machine and the setting were off. The steering wheel was locked down, which leads me to thinking that the box has some slope in it, or something is loose. We were returning form a show, about 6 miles away, on the way home the steering wheel worked it's way to the 11 O clock position.
Right now I am going to install QA1's lower control arms, to get rid of the stock ones.Then go to the alignment shop.
Any ideas well be appreciated.