Are the control arms akin to the gauges? Is it just a matter of the problem reaching the right ears. I don't know if the gauge problem is finally fixed but it seems a reasonable solution has been found. With the technology available today it would seem reproducing an existing proven part isn't that impossible. I understand the need for demand, but is it that much less than the gauges? You can drive with a broken gauge but not a balljoint or control arm.