I couldn't believe it! I had set my Yamaha TRB-6P aside for about 4 weeks to concentrate on my Rickenbacker 4003. When I picked it up a few days ago, the strings were nearly touching the frets and the buzz made it unplayable. It was set up perfectly when I last played it. There were changes in the Rick too, but nothing this radical. It will take a major torque rod adjustment to correct it. Maybe the massive neck on the Yamaha is more susceptible to climatic changes.??? During those 4 weeks, the only change is that we went from +20 degrees F and no humidity to +70 degrees F and 70% humidity. Since the instrument never left my house, where the temperature is constant, the humidity must be the culprit. Does anyone else have this problem? Is it something that is common to the Arctic?