Hi All-- A bit of advise please. I have a new (2 months old) Custom '59 P Bass with a maple neck. I have taken the neck off several times and tightened the truss rod fully. This gives the proper relief--3/32" at the 8th fret (acutally a shade tighter/smaller--that's the way I like it). About 3-4 hours after that, the neck moves back to its original relief which is not to specs--i.e., greater than 3/32 at the 8th fret holding down the string at the 1st fret. My question: Is this just because it's a new bass and the wood needs to season and settle in? And how long would that take--a year? Less or more? I've never owned a brand new Fender bass, and the used ones I've owned never had this problem, I suppose because the neck wood was fully "broken in." Thoughts??? How long should I wait before taking the neck off and tightening the truss rod again? Is it the winter weather (I'm in Ohio). I hate taking the neck off several times, worried about the holes where the long neck screws set in to bolt the neck on getting loose/too big for a proper tight fit. Thanks, Andy.