I am not sure I understand the control surface being thicker than the stabilizer.... also, if I don't want to hang weight forward of the leading edge of the elevator, is it better to use balance tabs on the ends? I will keep the servos/pushrods very close to the elevator so there shouldn't be any slop there.... any thoughts on using spruce in place of balsa for the horiz stab or elevator?

Thanks for all the advice..... should help out alot.