Here is the UnwrapCurve of the BasketBall curve, using Flow, and also UnwrapCurve to get the base length(s).
Also a ReWrap of the Curve, using Flow.
There is a small change in the length of the curve, upon unwrap.
Upon rewrap, relocating the center may have resulted in a slight size variation. (The radius is still 6 inches, +/-.)
The Sphere seems to be a little bit off from the curve, perhaps due to having used Rebuild.

(Have failure to upload...) Ran out of room. Deleted a dozen old files.