You'd be amazed what gets skipped or missed in a busy shop.... I've never failed to be surprised on a fairly regular basis. Not that I suspect he did anything wrong... just a reminder that mistakes happen.
Sadly a lot of people are blissfully ignorant of the fact that even the most expensive, meticulously cared for and serviced tools may function FAR worse than the cheapest tools if you don't know how to use them.
Good luck with everything!