Highwing or Lowwing?
Hey Mikey!
No dihederal. It was the same wing we use on the high-wing Vortex. Dihederal is most likely what it needed. The airplane trimmed out perfectly (thanks dad). But on take off, you had to use high-rate elevator. On low rate it would just run along the ground for about 50 feet before getting airborne.
Flying it was another story. I could never get it to feel comfortable through the corners. It would pitch down then pitch up, just didn't want to remain stable. Keeping in mind that the wing and tail were the same as the normal Vortex.
Oh well, nothing ventured, nothing gained...
Randy