Yeah, tell me about the 5-way switch. Real deal-spoiler on an otherwise AMAZING JP model. Real pity it didn't come out with the classic 3-way switch....
I am pretty sure that there is nothing wrong with the guitar. Just try to tighten the srews for saddle hight. Sometimes the two screws on one saddle...
I can only recommend that, too. I have my humidifier set to 50%. The guitars in the room have extremly stable tuning now and also the fretboard look...