Least said the better . . . . a failed experiment!
Then again . . . . This "For Sale" sign was extremely hopeless to fly (read "impossible"). Eventually I realised that despite having glued asheet of lite-ply to the bottom of the "wing" it was "bending and flexing" in the air making control, errr - exciting!
Five flights and "out" - model binned in order to save my heart from more stress!