Hey guys. Call me ignorant, but I just noticed how desperately dry my acoustic guitar is. The fretboard is bending inward toward the soundhole beginning where it meets the body and the top is as concave as the one pictured on 'fretnotguitarrepair.com'. The action is also very low. I get fret buzz on the 1st and 2nd strings between the 5th and 8th frets, as well as between the 11th and 14th frets. I'm going to get a soundhole humidifier on Friday (any recommendations as far as brand? I was thinking kyser, but how do the very inexpensive Planet Waves ones work?). I've loosened the strings in hopes that it will relieve some stress on the top for the time being. How long will it take to bring the top back to a healthy state with one of these humidifiers? Also, it has a UST and a battery powered onboard preamp. Do I need to worry about these at all?