I think the guy was good at taking the part out and replace it with a new one. He tried, but ended up breaking the pilot jet's head.
Just like you said I spent the last 3 nights educating myself about how everything works. Broke everything down, cleaned it, figured out the mechanics, tested the TPS. It took me a while to figure out what the bloody heaters were and why there is an electric component to the carb. Now I know lol
Now I actually think the carb is not the problem. I ordered a pilot jet, will put everything together and feed it fuel through a hose and funnel to test my new theory.