How can I precisely control the camera position using veiwpoint in an animated  multibody display.

My question arises from an post by John May, http://www.mapleprimes.com/maplesoftblog/95570-Klein-Bottle-Plot

I have attempted to use the excellent articles with multi-body displays and was forced to use plots[display] rather than the plot3d function as described. It went well but...

My first Question ever.

I am trying to create 3d surfaces between spacecurves 

I have tried various approaches with Known curves and stringing polygons between points on different curves. Currently I am stuck, I need to create surfaces between circles of known radius and centre position but the evalf or solve funnctions return values that have to be manualy cut and pasted into spacecurve. Think of the Tapered Candle cut into cross sections but in my case...