Thanks for the quick reply! I'll do what you suggest. I was going to use 1/8 in ply in the center section and 1/8 in ply in the first, second and fourth ribs and 1/8 in balsa ribs in the others.

With that supertigre .61, i was almost able to hang the Telly on the prop!! If it had more control surfaces, I could probably do it, but I keep trying and or gliding around at low throttle with my 16 ounce fuel tank!! I haven't tried to run the engine at peak efficiency, but i have flown for about 45 minutes with this setup!

Thanks again,
Bryan