So i got a new JP6 a week ago, and set it up including adjusting the truss rod and everything, but today i went to do some fine tuning on the truss rod now that the guitar's had time to acclimate and it absolutely won't budge. I can't get the wheel to turn in either direction, and it even managed to break the tip off of a small, albeit cheap, screwdriver. Why over the span of 4 or so days would the truss rod go from working fine to not moving at all? Sigh.