I misunderstood the question. I thought that you wanted the two
smaller spheres outside the larger sphere, a set of three touching
in a line, which my explanation covered quite nicely thank you. As
Grim said if you can't see the forest through the trees remove the
forest for a better look. It appears you are getting shperical
aboration in the view of the interior of the larger sphere and
evaluations made this way will be invalid. It only takes a second
to comment out the larger sphere to see the two lesser spheres with
greater clarity.

-- 
Ken Tyler

mailto://tylereng@pacbell.net

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