Try to take away the Lunsford mounts and place the top of the shock closer to the tower... the body of the shock is under the tower right?
Edit: I see you beat me to it
It now looks as shimming back the whole tower is the solution. At least that would be a solid solution. Shimming the camber link would be risky...
What you also could try is to interchange the left and rear hub, and mount the camber links on the other side. It will be at a slight angle though but not that much I think... (the rear arms are also angled/toed)
What does the manual say about the hubs?