I had my Am Special set up with the action nice and low, but there was no buzzing to be heard anywhere. Yesterday I picked the guitar up and the strings in the first three frets buzz like crazy and in some cases, the notes are practically dead. I know changes in the weather can make strange things happen, but I've never had a guitar go from perfect set up to unplayable overnight. This happen to anyone else? Based on the action near the nut being terrible, what are my options? Just raise the saddles, or should I be adjusting the truss rod a bit?