This will need pro skills. Please do take it to a qualified luthier. Those D15 sound so good, it's worth every penny you'll put in.View attachment 93281 View attachment 93273 View attachment 93265 Picked up a d-15 and the neck has some separatation at bottom side (see picture). Possibly something one can do? Or better to take in? Nice guitar, but action is high because of the neck.