You have obviously never seen a 10 day checklist for a directshaft TP aircraft.
Or have a clue what the line engineers check and what they need a part 145 hangar for.
Or for that matter know what the training is for getting the QA approval for doing such a check. I suspect I also used to pick up more faults than the Engineers did but thats also because I used to fly the sod for 6 sectors a day.
That fact I was also a Pro Engineer and a plant fitter in a previous life might also have something to do with it. There are pilots who its best not to allow near an aircraft with anything sharper than a biro and can't change the spark plugs on a car, a bit like avionics engineers.