I see no references in Bentley, are ball joints on 5ktq rebuildable? Due to poor repair (non-hardened pinch bolt), in previous life, LF ball joint stud is worn beyond use. I see pn for boot and clip, and one for entire control arm. If ball joint not rebuildable, are remanufactured control arms available? What's the best approach here? --Gary ('86's:5ks&5ktq+'87CGT)