...and what happens when you purchase a guitar directly from Fender, and the assembler swapped the neck because he nicked it, but forgot to record the change in the data base he's responsible for recording? You all put a lot of faith that just because the s/n is recorded, it's written in stone? I can't say for the guitar industry, but I worked for 30+ years in military electronics and accutate records were required! Yet it boils down to if the individual feels it's worth the bother to record or correct a data entry..... it ain't gonna matter to him/her! ....seriously, nobody knows until someone gets caught, and only if it's affecting quality or liability! Now.... go home and play you guitar!