How would you know if the wing is stalling first, or the elevator? I maidened a H9 1/4 scale CAP 232 last weekend. First inverted loop I tried, it snapped unexpectedly on me about 3/4s of the way through the loop. Scared the hell out of me as it was very quick and violent. I was being quite gentle on the elevator input, and compared to other large planes I've flown, I didn't think I was yanking it very hard. I strongly dislike having a plane unpredictable and unpleasant to fly. I'll move the C of G forward and play with reducing the control throw, but I sure don't like what I'm seeing here. There's a CAP 232 thread on the giant scale - I'll see if I can dig it up ans seek advice there too...