The tone of my G100 is changing. As I look the guitar over I see the neck has the slightest of twists in it. I wonder what else is getting out of shape. If this is the affect of humidity swings will it correct itself? The change in sound is nice, has sort of a prrrr...maybe that should be grrrr being it's a Gretsch. This is my first guitar, I'm a new player and don't know sh-t.

When you say twist to you mean a bow between the string and the fretboard or do you mean the neck is warping? If your not sure I would take it to a guitar tech as soon as possible. A warped neck is a very bad thing.