The more you think you know about something, the more you should push yourself to look under the hood.
There is always something there that annoys your view of the problem. Something that doesn’t fit. But that something adds valuable perspective to what you’re working on, and more often than not it can be the true differentiator for your success.
I have always found that even though I have worked within a particular sector a number of times before and think I am pretty well covered, there is always valuable insight under the hood as soon as I curiously and unbiased start looking. My bet is that you will experience the same.