I notice you have the in between version, new wing but old fuselage. Design in new fuselage changed in order to counter some of the minor problems you have encountered. New canopy construction and the addition of a nomex former to prevent the flex you were encountering at the canopy. I must say that I also prefer my first version with the formers in the back of the fuselage.
Does anyone have a picture of the fuse with this new former. I believe I must have the original version with the internal truss work but I am also concerned with the flex of the tail section. I have enjoyed flying my Pinnacle so much that I have not bothered putting the final touches on the Beryl until now. The Pinnacle is much more stiff in comparison to the Beryl on this issue.
Thanks,
Stuart