I just read the actual 9/11 Commission Report and one detail really stood out

I always heard the 'let's roll' story, but the report says Flight 93's cockpit voice recorder only picked up sounds of a fight, not those exact words. I found this on page 14 of the report's first chapter. It makes you wonder how certain parts of a story get cemented in public memory. Has anyone else found small facts in official reports that change the common story?