I picked up a nice-looking, used off brand solid-top with (laminated?) rosewood b&s at auction for little more than a song a few days ago. Bringing it home, however, I discovered a few problems...most, if not all, I suspect may be due to a severe lack of moisture. The action is definitely too low (and that's with three shims under the saddle), which results in some serious fret buzzing on all strings at the 11th fret and below (the high E string is particularly bad, and starts buzzing several frets above that). The truss rod was originally as tight as it could be, and has been loosened considerably...but to no avail. There are also several sharp fret ends.
I know this guitar needs some work, but I'd like to try correcting what I can before deciding if it's worth bringing in to the shop. Getting it to a proper moisture level seems like a good place to start. I've already put in a soundhole humidifier, and another in the case's uncovered accessories compartment. I figure I'll leave it closed up for a few days and see if there's any improvement, but I'm wondering if there's more I can or should do. Also, what are the odds of the additional humidity alone correcting the fret ends?