Nut,
More clarification please. Is the filler material between to different sections of the core, holding the inner section in place--or something like that? Or is the filler material filling a void in the center of the core?
In other words, it sounds like the bottom of the hole just happens to be at a point where two sections of the core join, and if it were a little deeper then it would hit a solid inner-most portion of the core. Is this correct? Or, is the inner-most portion of the core simply filled with mush (filler material)?
Thanks,
CK