On my daily used and abused alder/maple cirrus, I've noticed some changes with it. The neck is not finished and simply oiled I am to understand. On the most commonly used lower positions of the neck it is noticably lighter in color, like the oil has been worked away. I've also noticed increased instability in setup. For years I never even had to tweak the neck in the slightest, it stayed right where you put it. But lately it seems to change much more frequently and easily. And my care, locations, temp changes etc, have not varied much in recent times to cause it I don't think. I wonder if indeed the bare maple is coming through and causing some problems. Is this the case and what should I do to treat it? What kind of oil? I have some stringfellow lemon oil I often use on fretboards and have used on my entirely oil finished wendge fretless cirrus, but I wonder if this is sufficient? Thanks.