Mark;
What was the weight of your Corsair? Did you have flaps and retracts?
Thanks,
Mike
ORIGINAL: frenchie79
I built the 60 size Corsair a year ago and felt the same, but as MnnFlyer said, imbed the ply, harden the holes and use Sullivan Steel control horns (they have 4 screw holes per horn) they will not pull out on this size plane-not enough servo torque or stress to pull 4 screws. You will be fine.
I have a YS110s in mine and really put it through the speed runs and HIGH G turns-I feel totally safe with the setup.
Larger gas models????????? may not use this method.
Mark