George - thanks for the reply - I have been flying my Spitballs -basically same layout and the inside and outside snap character is superb
instant and predictable.
So -just as a quick peek -i am slicing up a scale profile of the Cassut as yet anoher look

The aspect ratio is about the same as my Spitball.
My first real model will be 44% - for ZDZ80 single on tuned system
weight based on oher stuff done in same manner-well under 20 lbs - more like -18-19 lbs. wing area 1900+
this one really has my interest piqued!.