I have a Sky Fly that is basically worthless... the control surfaces wont work properly anymore.... either the fishing string is stretched out or the servos dont have any more balls left to pull the surfaces.

I would like to retro the plane with some REAL servos. Is there a way to hack in real servos to plug into the circuit board? I would hate to trash the rx, esc, tx just because the servos and control horns suck dog.