1966 Dart Steering Problem?

I had it up on jack stands under the lower control arms and ran the steering full left and right, didn't feel anything. Put the tires on some skid plates and felt the interference. There is and indentation in the left rear side of oil pan for the center link to clear and the clearance is very tight, but it is not taking any paint off the oil pan. What do you all run for suspension height and how much clearance do you have between the upper control arm and the rubber bumper? Thanks
Ball joints binding? Or tie rod ends? Ride height will not affect center link.