Yes, there are differences . .

After tirelessly reading thread after thread, I decided on some changes. The main changes being:

1/ Made a new balsa rudder and fin post with 'V' shape hinge edge on rudder and fin.
2/ Changed the shape of the rudder and removed the counter-balance. (heard this improves things)
3/ Moved the pull-pull linkages up to roughly the centre of the rudder.
4/ Carbon Tow to strenghten and stiffen the sides of the fuse between the wing and fin post. Four of the strands run start at the wing tube.
5/ Wing adjusters with the rudder servo tray bracing the fuse.
6/ Bolly undercart and pants

JB