This has never happened to me before. I keep my MM in a gig bag. Didn't use it for 2 weeks. Opened it up at a gig, and the action kinda flipped out on me. It was about 1/4" higher all the way down the neck. Like a completely different bass. There hasn't been any major climate or temperature change - I tuned down a half step at our last gig and left it like that, but I've done that before - and other than that, I did nothing differently than I have in the past 3 years with that bass. I did a quick setup before we played, and now I just tweaked it for today's gig - but I'm concerned that it's gonna play tricks on me again - if it settles in the opposite direction this time I'll be buzzin all over the place. Any ideas what might have caused this?????