RE: weak rubberbands on wing?
It really does look funny when the wing does that.
Real windy day, got the plane right up there, and I mean way up there on the windward side of the field, brought it down in a shallow dive at full power right past the strip.
At about 20 feet of the ground and wings level it went into a full loop. the plane was really moving too. You could see the gap between the wing and the fuse. Everyone at the field thought I had balls to try that, but I dint even give it up elevator. The front of the wing caught a slight gust, lifting it slightly and then as I was moving so quick it caused the wing to angle more up, causing the bands to stretch more, causing the wing to angle up more. It only stopped looping after two full loops when the speed got below a point that would let the wing settle back down.
No damage at all to either the wing or the fuse, just added ten years to my life watching it and waiting for the wing to fold.
Now I only use new bands every flight.
Cheaper than replacing the entire plane.