I checked where the CG is on my plane and it at 95mm from the LE at the fuse. The manual shows that you need to measure out 165mm from the center of the fuselage and where that point intersects the wing you measure between 85mm -95mm back to find the CG???. Anyway I built a Vanessa CG jig and always double check the CG. The exact CG is at 100mm from the LE at the fuse.
My Giles flys perfect in knife edge with out any mixing. No coupleing effects at all. It will even climb in knife edge but not quite do a loop. The only time I have problems is when I fly knife edge with say the right wing up and then do a fast aileron roll to get the left wing up it seems to pull toward the gear but I think its my timing on the controls.