I will let Aerohead answer, but you should note there is more than one Aerodynamic Streamlining Template that he has posted over the years. I utilize the second one that was posted, which is labeled AST-II. I cannot tell from your photo which one you are using, but I think it is the first one.
Also if you look really closely at the template versus the streamlined body diagram, I believe the front of the template (not the boat tail) has been stretched out to be deeper than necessary for minimum drag. I believe this was a practicality measure to have more usable interior volume for the Template vehicle.
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