I guess I kinda mistyped that. I'm using standard Sig construction, but instead of having two main spar doublers with the dihedral set up, I have a solid doubler running across the top going out toward the tip one extra rib. I have also moved the rear spar forward to allow for the ailerons. To strengthen the wing even more, at least the bottom wil be fully sheeted. It might add an ounce or two, but I'm running dual aileron servos with direct linkage as well, not torque arms or bellcranks. I figure I'm not trying to reinvent the wheel, just do a couple of mods for a more controllable aircraft.