Thanks mate, i have a feeling its the wing loading... as the plane is a bit heavier due to running the OS 1.08, i am also running dual elev servos with 4*40's rod's all round to so it is heavier than normal, but i don't believe the box weight specs anyway they seem to be too low. The CG is right.. i balanced in on recomended, leaving it a fraction nose heavy for the safe side.. i might bring it back a tad see what happens?