I'm in the same boat as Kevin here. I've never had the neck movement problem that has come up in this forum.
Not sure if it has to do with where I live,Texas, or the action I prefer or the strings.

?
I've owned several instruments, basses and guitars of various brands and currently have somewhere in the area of 20 different axes. I have never had the neck problems that hear some people having, with the execption of a
Steinberg I owned back in the late 80's, NOW THAT WAS A BOAT OAR, and my 78 Musicman Fretless. The Musicmans' neck problems are from my own neglect though. I left it in the case for 10 years in the attic, I know I Know, I'll take my 40 lashes for that, BUt I have just about got it back in shape.
Just Lucky I guess,
Olie