However, my neck has such a tight seat in the pocket that I can't even move it a bit. When I turned the screws, I heard a crackling noise on every screw (not particularly convincing), but nothing moved.
I then removed the neck and found that the screws have hardly any room in the body holes; actually you have to screw them through, which might also at least be partly the cause for the issue.
Finally, I saw that one of the screws was screwed in somewhat tilted compared to the others causing a slightly wider thread in the neck. I hope that doesn't effect the fit between body and neck; I don't know if this is something to worry about at all and occurs regularly ... I haven't removed to many necks so far
looking forward to your responses