From what I've seen with auto techs is that there actually is more incompetence than dishonesty out there. But what can we expect when guidance counselors at schools push the worst students into that field figuring they won't make it anywhere else. It takes alot of intelligence to master todays vehicles, unfortunately, the pay, benefits and level of respect are not consistent with the knowledge required.(I'm speaking of employees here, not shop owners) The liability is also high, replacing rotors when they can no longer be machined is common sense and the law. If a tech machines rotors below allowable tolerance and something happens, he could go to jail for manslaughter, just like an electrician could if he is negligent in his judgements. (or is trying to save someone some money by shortcutting)