Hi, I 'm building a CAP232 2.2 m now and I'm introducing a lifting stab with it, here's the reason why.
I know that the tradition in acroplanes is to put everything at 0 referred to the fuse neutral line.
All acro's I build that way in the past(cap232,extra 260, sukhoi26, katana s) had to be trimmed down to fly straight. So I think that the geometrical neutral line of fuse is not the aerodynamical neutral line of fuse because a symmetrical airfoil at 0 degrees cannot lift.
So all these planes must have been flying a bit tail down.
So on this plane I've set the wing at the calculated angle of attack it should have to lift the 79N is't gonna weight and to compensate the fuse willing to inclinate out of the geometrical neutral line I've put the stab at the same angle of attack.
It hasn't flown yet???? but I will report when it has. Everything can be changed of course because I must admit not to be very confident in my theory.
Let's wait and see.

cuwaert