I have a funtanaS 40. CG is good - trims neutral - level flight go inverted need just a touch of down to maintain altitude, Vertical dive test - wants to tuck to belly a touch....lowered flaps to strighten that out , KE-Pulls HARD, I mean HARD to the belly...takes a ton of up to keep it anywhere near straight. The thrust of the motor (UP/DN) is virtually at 0. Fly straight and level at full throttle and then to idle..shows a gradual decent. When flying at idle and go full power it stays level. Mixed elev into rudder on KE switch but it wants to roll out. The wing incidence is set by H9 and the h stab Incidence appears to be true to the wing. Other than the KE it flys good. This prob makes a slow roll difficult when you attempt to use rudder at the 1/4 and 3/4. Any help would be appreciated.

Thanks
V