As long as I'm going to be performing surgery on my epi strat copy. I was thinking that perhaps I should replace the nut. From what little i've been able to glean from the intarweb, it appears that my Epi has a plastic nut. I don't know why this would be bad, but most people say they replace plastic nuts.

How do I know if my nut is bad? How hard is it to replace a nut?