So I bought a used Fender Jazz for a really nice price, and while taking off the strings and neck to check out everything under the hood, I seemed to have caused a crack at the first fret. I know for a fact that the crack wasn't there when I bought the bass, so this was without a doubt my doing. I'm assuming that the bass, having not been touched for a very long time, responded negatively to that ridiculous change in pressure so unexpectedly. Now, aesthetically, I could care less about the crack. However, I am worried about the crack getting bigger as well as the deeper underlying problems of this. What caused this to happen, anyways? Should I give the rod a little relief? What do I do, talkbass?