Hi is there anybody out there that has or is building a TB4 BASS GUITAR? I am particularly having problems with fitting the neck! On mock building the neck would not fit so I had to do a bit of sanding to the sides of the neck pocket. Having done that I got a better fit and still reasonably tight. On fitting the neck and screwing it down I've got a huge gap between the foot of the fret board and the body! Is that normal or is there any way I can fix this problem? Thanks guys.