How precisely does the neck have to fit the pocket (or how good is it in a "factory" guitar and how much impact does it have on tone, sustain etc)?
The neck I have is a nice tight fit sideways in the pocket - it goes in without being forced but I can pick up the guitar by the neck, held by friction alone. However, there's a small gap between the heel and the body of around 1mm, because the radius of the pocket route seems to be slightly larger than that of the neck, so it stops just short of the end of the pocket (I know on some cheaper factory guitars the radiused corners of the pocket are drastically over-routed so this can't happen). Is it worth having a go at the corners with glasspaper to make the neck fit flush against the end of the pocket, or doesn't it matter?