basically... i went in to get a set up on my Fender P Bass. the tech told me that i had some fret wear and that i needed to get some crazy fret job. on the first three frets, there are definately some marks (no severe dents or anything). naturally i went to another tech to get a second opinion. this guy tells me that i'm years away from needing any frert work on my bass. what do i do? how do i tell if i have significant fret wear?