I will go with the HS-85 servos. I'll just have to box them with some balsa stock. The way the servos mount up in the Contender wing right now is between two 1/4"x1/4" pieces of basswood stock. There is no support on the sides. With only one screw holding the servo at each end, I fear the servos would twist side to side. I think two pieces of 1/4"x1/4" balsa stock will solve that problem.
Tom