RE: firebird commander
hEY !!!!
I hard experiences while flying the Firebird Commander after i replaced it's wing into the Aerobird wing ... the aircraft lost it's straight turn capacity and its too difficult to control
the aircraft in straight areas !!! to turn you'll have to give it its time and its one hell of dangerous thing when you're surrounded with some trees !!!!
I noticed that the Aerobird wng tips are not folded up as much as the Commander's ones and that particularity provides the Commander to break right and left fast and straight !!!
NOTICE that i did one unique flight with that wing and on Automatic mode !!!!
I suggest you to look for wings that have a large wing surface to maintain the semi sail-plane propety and folded wing tips to maintain the ability for straight and stable turns.
That's all for now SEE YA::::::