i have a fender MIM bass with a poly finish, I had it in my soft gig bag which basically has no padding....long story short the bottom of the body hit the ground a little hard and cracked off a chunk of the finish down to the bare wood. I dont really care about the cosmetic damage but I am a little worried about the bare unfinished wood exposed. Is this going to damage the finish further with changes in humidity or will I be ok?