First, let me say I think the F-bass is an outstanding bass that feel and sounds excellent. On some of the occassions I've had the pleasure to play one, I've noticed that I could feel the "separation lines" on the 3 piece neck. I think it's 3 pieces? In a couple of cases, this was pretty subtle, but in one case it was pretty noticeable to the point of being a little bothersome. I'm sure it's an easy fix, but I'm curious if it's a rare problem to which I had inordinate exposure, or if it's fairly common.