And when you set the ride height, that includes the rear.
If the rear is sky-high, you will never get adequate caster. Unless the front is also sky-high.And then yo get camber issues. And bump steer.
And if the back is not level from side to side, then one T-bar will get cranked for compensation, putting the car in a twist.
In my mind, the only way that tire can move around that far is if the UCA is moving around. Or as mentioned, the strut rod has an issue, which I have never seen.
Jack the car up under the lower control arm as near to the tire as possible.Take off the tire. Rip that UCA back and forth; I'm sure it is loose. The adjuster nut may be tight, but the squeeze on the frame-member is insufficient. I have seen that several times when new bolts are installed.There is just not enough threading on new bolts. If the bolts are originals,then they must be loose.
And if it ain't the upper, then it has to be the lower. There is no other option. If the camber stays about the same, then I would tend to suspect the lower.
Pics of the front end of the strutrod, with the jack under the LCA (not the suspension hanging down),should clear it up pretty quick
