ORIGINAL: ozief16
Or other thing to check is rudder trim. Airplanes will drop to the deflected rudder at stall (assuming everything else is straight). Even a very minor deflection (undetectable to the naked eye) will cause a roll off to that side. Just for grins put in a touch of left rudder trim and see which way she breaks. A lot easier than cutting up your wing etc
Dave
Excellent point !!! The rudder... The most forgotten and least used control surface in R/C..
Danno