Re: 5piece neck rough
It appears that the back of the neck was sanded up to the nut. This was a great mod for the one-piece necks. You're saying however both pieces of the wenge are sunk so you can actually feel two slight cavities the whole length of the neck from heel to nut? If so the wenge pieces have shrunk (an annoyance of not-well-dried multi-piece woods). The obvious fix is to sand the back of the neck so it's smooth/level then at least apply a slight protectant such as Endust, Ballistol, linseed, tung on the wood periodically.