As someone who has rebuilt vehicle engines (my own, both car and boat), and does my own maintenance on my boat's diesels (fairly precise work, where a couple of thousandth's worth of clearance can be difference between a properly running engine and one that blows up and costs you $30k), and has repaired my own brakes and suspension on my vehicles since I was 16, I am far more qualfiied to rebuild a regulator and exercise due care in doing so than 95% of the so-called "certified" techs - many of whom don't even own a torque wrench.
If this ever came down to litigation the entire house of cards would collapse. Imagine the "certified tech" being trotted out by the manufacturer, with the certificate being the "proof" of their competence - and it is then learned that their "certification" was earned by:
1. Showing up at DEMA.
2. Paying for a one hour class, and sleeping during it.
3. Never having actually PERFORMED a single rebuild under supervision, or having had to pass any kind of certification test, nor even, for that matter, having presented any formal credential or prior experience in mechanical matters before registering for said "class." In fact, the only requirement for such registration is being employed by a shop selling that brand - even if your "employment" is that of someone who mops the head on the dive boat!
Pop goes the bubble of "legitimacy."
The manufacturers like to play this game that there is something "magical" or "difficult" about these things. There is not. There are, in fact, more parts in the governor of my boat's diesel engine than there are in the typical first stage, and there are actual critical clearances in the former - which MUST be correct or the engine may "run away" on you when started and (literally) blow up.
Its a scam.
