Perhaps you would be more at peace if you stayed with carbed scooters - especially since you prefer to 'adjust/repair' yourself, and since, sadly, you so distrust your nation's mechanics.
EFI scooters do not require any tinkering. In fact, to do so can really mess one up.
Myself, I don't imagine mechanics to be one bit more, or less, dishonest than any other of us tradesman.
Stig
Unfortunately you can not compare mechanics appointed by dealers in the US with many mechanics appointed by dealers in our country.
In the US no dealer will appoint a mechanic at a dealership, UNLESS the mechanic is fully qualified. I am fully aware of this, because my son in the US is a qualified Ford, Audi, and Infinity mechanic. (Due to a shoulder injury he had to leave the industry, but that's beside the point).
In our country it is quite common that dealers appoint people who are not fully qualified. Apart from that - due to poor salaries and better opportunities elsewhere, qualified mechanics often hop around from one dealership to the other. Then they often start working on different models without having proper experience or training.
I personally had several bad experiences with incompetent mechanics on my own vehicles. For example - my wife drives a Ford Focus. Some time ago she experienced a problem with the car. At the time I was too busy at work to work on the car, and my wife took the car to a Ford dealership.
In short - after spending a small fortune on parts and repair costs, nothing changed - they couldn't solve the problem. Complains didn't help - each time my wife was complaining they just gave explanations which didn't make sense.
In the end I solved the problem myself by discovering the worn component by pure fluke. (Brake disc was worn - the brake pad was slightly loose and made a rattling noise).
There were more incidents, but yes - I don't trust the local tradesmen, and I have good reason not to trust them. I don't have any reason to feel bad about my feelings - many people are complaining everywhere.