What you've done is screwed up the geometry of the front suspension with the extended spring. The spring has pushed the lower control arm down in the car and since the upper control arm is connected to the lower by the spindle, you've placed the upper arm into a downward part of the arc that it describes in bump and droop operation. When the upper arm went past center, it became effectively shorter, pulling the top of the tire toward the center of the car.

Look at the upper control arms where they mount to the frame. Are there any shims in there or did the first shop remove all of them in an attempt to correct the camber? The first shop you went to may have done all they could.

I know that somewhere, I've seen spindle extenders that can be added to the top of the spindle to add some negative camber gain to the geometry on bump by raising the outboard end of the upper control arm. These would tend to level the upper control arm in your case, changing its effective length and moving the top of the tire toward the outside of the car. Do a search on the web and see if you can find these items.